Solve the following quadratic function by utilizing the square root method. Y=xsquared minus nine

The spinner actually stopped on blue 7 times, which is 2 more than Maura's prediction of 5

Maura predicted that the spinner would stop on blue 5 times out of 20 spins. This is a predicted probability of 5/20 or 0.25.

However, the actual number of times the spinner stopped on blue was 37.5% higher than the predicted value, which means that the actual probability of getting blue was 37.5% higher than the predicted probability. We can express the actual probability as:

Actual probability of getting blue = 0.25 + 0.375*0.25

= 0.34375

This means that the spinner actually stopped on blue 0.34375 * 20 = 6.875 times.

Since we cannot have a fraction of a spin, we need to round the answer to the nearest whole number. Rounding up, we get:

The spinner actually stopped on blue 7 times.

Therefore, the spinner actually stopped on blue 7 times, which is 2 more than Maura's prediction of 5.

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Answer:

Step-by-step explanation:

f(x) = ax² + bx + c      a= -8

f(x) = -8x² + bx + c     that a controls the direction and the stretch.

So the function will be stretched by 8.  The negative represents the direction because, it's negative, it will be facing down.  

Not sure how your class describes it but it could be facing down, concaved down, or expands downward.  

Andres brought the most milk, and Carlos brought the least milk.

To find out the student who bought the most milk, you need to convert the liters decimals so that they can be compared evenly.

Andrés brought 2²

= 2 x 2

= 4 liters of milk.

Bruno brought 13/4:

= 13 / 4

= 3.25 liters of milk.

Carlos bought 1. 16 liters and Daniel bough 1. 3 liters.

This shows that Andres bought the most milk and Carlos bought the least amount.

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Sneha's current age is 16 years old. Sneha's mother is 44 years old.

Let's assume Sneha's current age is x.

Sneha's mother's current age = 2x + 12

After 8 years, Sneha's age = x + 8

After 8 years, Sneha's mother's age = 2x + 12 + 8 = 2x + 20

After 8 years, Sneha's mother's age will be 20 less than three times Sneha's age: 2x + 20 = 3(x + 8) - 20

Now we can solve for x:

2x + 20 = 3(x + 8) - 20

2x + 20 = 3x + 24 - 20

2x + 20 = 3x + 4

x = 16

Therefore, Sneha's current age is 16 years old.

Sneha's mother's current age = 2x + 12

= 2(16) + 12 = 44

So, Sneha's mother is 44 years old.

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The MAD for this set of data is 0.8.

To find the MAD (Mean Absolute Deviation) for this set of data, we first need to find the mean of the ages:

Mean = (13 + 10 + 9 + 10 + 10 + 9 + 10 + 10 + 11 + 9) / 10 = 10.1

Next, we find the absolute deviation of each age from the mean:

|13 - 10.1| = 2.9

|10 - 10.1| = 0.1

|9 - 10.1| = 1.1

|10 - 10.1| = 0.1

|10 - 10.1| = 0.1

|9 - 10.1| = 1.1

|10 - 10.1| = 0.1

|10 - 10.1| = 0.1

|11 - 10.1| = 0.9

|9 - 10.1| = 1.1

Then, we find the average of these absolute deviations:

MAD = (2.9 + 0.1 + 1.1 + 0.1 + 0.1 + 1.1 + 0.1 + 0.1 + 0.9 + 1.1) / 10 = 0.8

Therefore,To find the MAD (Mean Absolute Deviation) for this set of data, we first need to find the mean of the ages:

Mean = (13 + 10 + 9 + 10 + 10 + 9 + 10 + 10 + 11 + 9) / 10 = 10.1

Next, we find the absolute deviation of each age from the mean:

|13 - 10.1| = 2.9

|10 - 10.1| = 0.1

|9 - 10.1| = 1.1

|10 - 10.1| = 0.1

|10 - 10.1| = 0.1

|9 - 10.1| = 1.1

|10 - 10.1| = 0.1

|10 - 10.1| = 0.1

|11 - 10.1| = 0.9

|9 - 10.1| = 1.1

Then, we find the average of these absolute deviations:

MAD = (2.9 + 0.1 + 1.1 + 0.1 + 0.1 + 1.1 + 0.1 + 0.1 + 0.9 + 1.1) / 10 = 0.8

Therefore, the MAD for this set of data is 0.8.

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Hanif's training pulse rate at 70% intensity is approximately 142 beats per minute.

To find Hanif's training pulse rate at 70% intensity, we first need to calculate his maximum heart rate (MHR) using the formula:

MHR = 220 - age

Substituting Hanif's age, we get:

MHR = 220 - 14 = 206

Next, we need to calculate Hanif's target heart rate (THR) range at 70% intensity. This range is between 70% and 85% of his MHR. To calculate the lower end of the range, we multiply his MHR by 0.7:

THR lower = 0.7 × MHR = 0.7 × 206 = 144.2 (rounded to one decimal place)

To calculate the upper end of the range, we multiply his MHR by 0.85:

THR upper = 0.85 × MHR = 0.85 × 206 = 175.1 (rounded to one decimal place)

So Hanif's target heart rate range at 70% intensity is between 144.2 and 175.1 beats per minute.

To find his training pulse rate, we add his resting pulse rate (76 beats per minute) to the percentage of his target heart rate range which corresponds to 70% intensity. This is given by:

Training pulse rate = resting pulse rate + (0.7 × (THR upper - resting pulse rate))

Substituting the values we calculated, we get:

Training pulse rate = 76 + (0.7 × (175.1 - 76)) ≈ 142

Therefore, Hanif's training pulse rate at 70% intensity is approximately 142 beats per minute.

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Step-by-step explanation:

I have provided answer in attachment... this is solution of brainly tutor..

The height of the real boat is 3 inches and  length of the boat is 45 feet

What is Unit of Measurement?

A unit of measurement is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity.

In a scale model of a boat 1 inch represents 5 feet

1 inch =  5 feet

The height of the real boat is 15 feet

We have to find in inches

1/5=x/15

x=3 inches

So height of the real boat is 3 inches

The length of the boat is 9 inches

We have to find in feet

1/5 = 9/x

x=45 feet

Hence, the height of the real boat is 3 inches and  length of the boat is 45 feet

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each of Jennifer's five kids received 1/40 of the total pan of macaroni and cheese.

What is equivalent ratio?

The concept of a ratio in mathematics is the divisional comparison of two quantities, the antecedent and consequent. As an illustration, each ingredient must be added according to a ratio during cooking. So, we may argue that a ratio is employed to represent one quantity as a portion of another. The ratio can be written as a fraction as well. If the ratio a:b is a fraction, its form is a/b. As a result, it is simple to compare two or more equivalent ratios expressed as equivalent fractions.

If Jennifer had 7/8 of her pan of macaroni and cheese left after supper, this means she had 1 - 7/8 = 1/8 of the pan remaining.

To split the remaining macaroni and cheese evenly between her five kids, we need to divide 1/8 by 5.

1/8 divided by 5 can be written as (1/8) ÷ 5 = (1/8) x (1/5) = 1/40.

Therefore, each of Jennifer's five kids received 1/40 of the total pan of macaroni and cheese.

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The total differential of the function z = 7x^4y^5 is dz is (28x^3y^5)dx + (35x^4y^4)dy.

To find the total differential of the function z = 7x^4y^5, we need to compute the partial derivatives with respect to x and y, and then express dz in terms of dx and dy.

Computing the partial derivative with respect to x,
∂z/∂x = 4 * 7x^3y^5 = 28x^3y^5

Computing the partial derivative with respect to y,
∂z/∂y = 5 * 7x^4y^4 = 35x^4y^4

Express dz in terms of dx and dy,
dz = (∂z/∂x)dx + (∂z/∂y)dy
dz = (28x^3y^5)dx + (35x^4y^4)dy

So, the total differential of the function z = 7x^4y^5 is dz = (28x^3y^5)dx + (35x^4y^4)dy.

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Answer:

since 2x = z

replace z with 2x

900000 = x+y+z

900000 = x+y+2x

900000 = 3x+y - eqn (1)

79750= 0.08x +0.09y+0.01z

79750 = 0.08x +0.09y+0.01(2x)

79750 = 0.08x+0.09y+0.02x

79750 = 0.10x +0.09y - eqn(2)

from eqn(1)

900000 = 3x + y

y = 900000-3x - eqn(3)

substitute eqn(3) in eqn(2)

79750 = 0.1x +0.09y

79750=0.1x + 0.09(900000-3x)

79750=0.1x+ 81000 - 0.27x

collect like terms

79750 -81000 = 0.1x-0.27x

-1250 = -0.17x

to find x divide both sides by -0.17

x = -1250/-0.17 ~= 7353

since 2x = z

2*7353 = 14706

in eqn(3)

y = 900000-3x

y= 900000-3(7353)

y = 900000-22059

y = 877941

x =7353,y= 877941,z=14706

The missing measures are BC ≈ 23.77, angle BCA = 24 degrees, AB ≈ 56.77, and CD ≈ 56.77.

To solve the problem, we can use the properties of rectangles and trigonometry.  Since ABCD is a rectangle, we know that angle ABC is also 90 degrees.

Using the Pythagorean theorem, we can find the length of BC:

BC² = AB² - AC²

BC² = 9² + 22²

BC² = 565

BC ≈ 23.77

Using the fact that the sum of the angles in triangle ABC is 180 degrees, we can find the measure of angle BCA

m(BCA) = 180 - m(ABC) - m(CAB)

m(BCA) = 180 - 90 - 66

m(BCA) = 24 degrees

Using trigonometry, we can find the length of AB

sin(24) = AC/AB

AB = AC/sin(24)

AB ≈ 56.77

Finally, we can find the length of CD, which is equal to AB

CD = AB ≈ 56.77

Therefore, the measures of AB ≈ 56.77, and CD ≈ 56.77.

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Check the picture below.

The volume of the cone with a radius of 8cm and height of 15 cm is V = 1005.3 cm³, so the correct option is C.

Remember that for a cone of radius R, and height H, the volume is given by the formula below:

V = (1/3)*pi*R²*H

Where pi = 3.1416

In this case, we know that the radius of the cone is 8cm and the height is 15cm, replacing that in the volume formula we will get:

V = (1/3)*3.1416*(8cm)²*15cm = 1,005.3 cm³

Then the correct option is c.

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The ratios are 1. Current ratio = 2.90, 2. Acid-test ratio = 2.22, 3. Inventory turnover ratio = 3.57, 4. Debt to equity ratio = 0.77, 5. Return on equity ratio = 15%.

The ratios to be computed are:

1. Current ratio

2. Acid-test (quick) ratio

3. Inventory turnover ratio

4. Debt to equity ratio

5. Return on equity ratio

1. Current ratio = Current assets / Current liabilities

Current assets = Cash + Accounts receivable + Inventory = $17,205 + $80,290 + $68,820 = $166,315

Current liabilities = Accounts payable = $57,350

Current ratio = $166,315 / $57,350 = 2.90

2. Acid-test (quick) ratio = (Cash + Accounts receivable) / Current liabilities

Acid-test ratio = ($17,205 + $80,290) / $57,350 = 2.22

3. Inventory turnover ratio = Cost of goods sold / Average inventory

Average inventory = (Beginning inventory + Ending inventory) / 2

Beginning inventory = $57,350

Ending inventory = $68,820

Average inventory = ($57,350 + $68,820) / 2 = $63,085

Inventory turnover ratio = $225,600 / $63,085 = 3.57

4. Debt to equity ratio = Total liabilities / Total equity

Total liabilities = Accounts payable + Mortgage payable = $57,350 + $114,700 = $172,050

Total equity = Common stock + Retained earnings = $160,580 + $63,085 = $223,665

Debt to equity ratio = $172,050 / $223,665 = 0.77

5. Return on equity ratio = Net income / Average equity

Average equity = (Beginning equity + Ending equity) / 2

Beginning equity = Common stock + Retained earnings = $137,640 + $45,880 = $183,520

Ending equity = Common stock + Retained earnings + Net income - Dividends = $160,580 + $63,085 + $31,100 - $21,700 = $232,065

Average equity = ($183,520 + $232,065) / 2 = $207,793

Return on equity ratio = $31,100 / $207,793 = 0.15 or 15%

Therefore, the ratios are:

1. Current ratio = 2.90

2. Acid-test ratio = 2.22

3. Inventory turnover ratio = 3.57

4. Debt to equity ratio = 0.77

5. Return on equity ratio = 15%

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The geometric term best describes Marci's description of the sun's light is ray

A ray is a line that extends eternally in one direction from a point in geometry, in this case the sun.

It symbolizes a straight journey without any turning points.

As the sun's light propagates in a straight line throughout space without end, Marci's description fits the definition of a ray.

To explain Marci's depiction of the sun's light as a line that originates at the sun and never ends is to use the geometric term "ray."

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Answer: Ray

Step-by-step explanation:

A ray continues but may have a segment near the stopping point

Answer:

[tex]s = \frac{3(1 - {6}^{9}) }{1 - 6} = 6046617[/tex]

The sum of this finite geometric series is 6,046,617.

m > 8 is an inequality used to calculate the number of articles Mustafa could have written.

Let's assume that Mustafa has written m articles for the school newspaper.

Then, according to the given information:

Heloise has written 1/4 as many articles as Mustafa has, which means she has written 1/4 × m = m/4 articles.

Gia has written 3/2 as many articles as Mustafa has, which means she has written 3/2 × m = 3m/2 articles.

The combined total of articles written by all three is more than 22, so we can write:

m/4 + 3m/2 + m > 22

Simplifying and solving for m:

11m/4 > 22

m > 22 × 4/11

m > 8

Therefore, m > 8 is an inequality used to calculate the number of articles Mustafa could have written.

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(A) The length that beats 80 seconds is 256 cm.

(B) The time of a pendulum with length 36 cm is 30 seconds.

(A) According to the given information, the time of a pendulum varies as the square root of its length. Let's denote time as T and length as L. Therefore, T ∝ √L. To find the constant of proportionality, we can use the provided data: T1 = 15 seconds and L1 = 9 cm. So, we have T1 / √L1 = k, where k is the constant. Now, let's find k: k = 15 / √9 = 15 / 3 = 5.

Now, we want to find the length (L2) of a pendulum that beats 80 seconds (T2). We can use the formula T2 = k * √L2. Substituting the values, we get 80 = 5 * √L2. To find L2, we can rearrange and solve for it: L2 = (80 / 5)² = 16² = 256 cm.

(B) To find the time (T3) of a pendulum with a length of 36 cm (L3), we can use the same formula with the known constant k: T3 = k * √L3. Substituting the values, we get T3 = 5 * √36 = 5 * 6 = 30 seconds.

In conclusion, the length of a pendulum that beats 80 seconds is 256 cm, and the time of a pendulum with a length of 36 cm is 30 seconds.

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Answer:

You are correct.
Hope this helps!

Step-by-step explanation:

The lines intersect at one point and that is the solution.

( The image shows a graph with infinite solutions. ( ignore the Byjus thing i was just trying to find an image that showed an example ... ) )

The value of m that makes the inequality  4m + 8 < 36 true is m = 1 for the set of numbers 1 7 11 and 36 contains values for m.

An inequality is a mathematical expression in which the values on the left side of an equation are not equal to the values on the right side, but instead are either greater than or less than the values on the right side.

To find the value of m that makes the inequality 4m + 8 < 36 true, given the set of numbers {1, 7, 11, 36},

Now, we know that the value of m should be less than 7. From the given set of numbers {1, 7, 11, 36}, only 1 is less than 7. Therefore, the value of m that makes the inequality true is m = 1.

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The 85% confidence interval for the population proportion of people who are captured after appearing on the 10 Most Wanted list falls between 0.194 and 0.286.

To construct the 85% confidence interval for the population proportion of people who are captured after appearing on the 10 Most Wanted list, we can use the following formula:

[tex]\hat{p} \pm z^* \sqrt{\frac{\hat{p} (1 - \hat{p})}{n}}[/tex]

where [tex]$\hat{p}$[/tex] is the sample proportion, [tex]$n$[/tex] is the sample size, and [tex]$z^*$[/tex] is the z-score corresponding to the desired level of confidence. Since we are looking for an 85% confidence interval, the z-score is 1.440.

First, we can calculate the sample proportion:

[tex]\hat{p} = \frac{109}{455} = 0.240[/tex]

Next, we can plug in the values into the formula:

[tex]$$ 0.240 \pm 1.440 \sqrt{\frac{0.240 (1 - 0.240)}{455}} $$[/tex]

Simplifying this expression, we get:

[tex]$$ 0.240 \pm 0.046 $$[/tex]

Therefore, the 85% confidence interval for the population proportion of people who are captured after appearing on the 10 Most Wanted list is [tex]$(0.194, 0.286)$[/tex].

We can interpret this interval as follows: if we were to draw many samples of size 455 from the population of people who appear on the 10 Most Wanted list, and construct a 85% confidence interval for the proportion of people who are captured based on each sample, about 85% of these intervals would contain the true population proportion.

Furthermore, we are 85% confident that the true population proportion of people who are captured after appearing on the 10 Most Wanted list falls between 0.194 and 0.286.

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A row parallel to the line y = 4 on a coordinate grid would be represented by a line with an equation of the form y = c.

A coordinate grid is a two-dimensional plane consisting of a horizontal x-axis and a vertical y-axis. The point where the x and y-axes intersect is called the origin, and it has coordinates (0, 0).

An equation in the form y = c, where c is a constant, represents a horizontal line parallel to the x-axis. In this case, the equation y = 4 represents a horizontal line that intersects the y-axis at 4, as all points on the line have a y-coordinate of 4.

To find a row parallel to this line, we need to look for another line that also has a constant y-coordinate of 4. One way to represent this line is by the equation y = 4 again, since all points on this line have a y-coordinate of 4.

Alternatively, we can look for an equation in the form y = mx + b, where m is the slope of the line (which is zero for a horizontal line), and b is the y-intercept (which is 4 in this case). Thus, the equation for the row parallel to y = 4 would also be y = 4, since its slope is zero and it intersects the y-axis at y = 4, just like the line y = 4.

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The derivative formula for the function is

[tex]f'(x) = 342x^4 + 414x^3 + 342x^2 + 418x + 385[/tex]

To find the derivative of the function [tex]f(x) = (9x^2 + 11x + 7)(38x^3 + 35)[/tex], we can use the product rule of differentiation:

f(x) = u(x)v(x)

where [tex]u(x) = (9x^2 + 11x + 7)[/tex] and [tex]v(x) = (38x^3 + 35)[/tex].

The product rule states that:

f'(x) = u'(x)v(x) + u(x)v'(x)

where u'(x) and v'(x) are the derivatives of u(x) and v(x), respectively.

Taking the derivatives, we get:

u'(x) = 18x + 11

[tex]v'(x) = 114x^2[/tex]

Now, substituting everything into the product rule formula, we get:

[tex]f'(x) = (18x + 11)(38x^3 + 35) + (9x^2 + 11x + 7)(114x^2)[/tex]

Simplifying this expression gives the derivative formula for f(x):

[tex]f'(x) = 342x^4 + 414x^3 + 342x^2 + 418x + 385[/tex]

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The sample space for the number solid is {1, 2, 3, 4, 5, 6} and the probability of rolling 1 is 1/6.

The sample space refers to the set of all possible outcomes of an experiment, while a sample value is a specific outcome in the sample space.

For the given 8-sided solid, the sample space would be {1, 2, 3, 4, 5, 6}, as the faces labeled "skip" are not counted as sample values.

Now, let's calculate the probability of rolling a 1. Probability is the likelihood of a particular outcome occurring, which can be calculated by dividing the number of successful outcomes (in this case, rolling a 1) by the total number of possible outcomes.

The total number of possible outcomes is 6 (1, 2, 3, 4, 5, and 6). There is only one successful outcome: rolling a 1.

So, the probability of rolling a 1 is:

P(1) = (Number of successful outcomes) / (Total number of possible outcomes)
P(1) = 1 / 6

Thus, the probability of rolling a 1 on this 8-sided solid is 1/6 or approximately 0.1667, or 16.67%.\

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The equation defines a linear function is A y = 2x/4 + 12

A y = 2x/4 + 12 is the equation that defines a linear function because it can be simplified to y = 1/2x + 12,

Which has a constant slope of 1/2 and a constant rate of change.

The other options are not linear functions because they involve exponents or do not have a constant slope.

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The latus rectum of an ellipse is 288/13 when the ellipse equation is given as [tex]x^2/169 + y^2/144 = 1[/tex]. Option A is correct.

The standard form of an ellipse equation is given as  

[tex](x2/a2) + (y2/b2) = 1[/tex]

where :

a = lengths of the semi-major axes

b = length of semi-minor axes

The length of the chord through one of the foci that are perpendicular to the major axis is defined as the latus rectum of an ellipse.

From the given data the equation of the ellipse is given as :

x² / 169 + y² / 144 = 1

By comparing the standard equation and the given equation of the ellipse we get :

a² = 169

a = √169

[tex]a = 13[/tex]

b² = 144

b = √144

[tex]b = 12[/tex]

The distance between the center and one of the foci is given by

c = √(a² - b²)

= √(13² - 12²)

= 5

We can find the latus rectum by substuting a and b values in the latus rectum of an ellipse formula,

= 2×b²/a

= 2 × 12² / 13

= 288/13

Therefore, the latus rectum of an ellipse is 288/13.

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The measures of angle T and S in a right angles triangle STU with side Lengths ST = 10 units and UT = 4 units are equals to

We have a triangle STU has a right angle at U so, we can call it a right angled triangle STU. Length of side ST = 10 units

Length of side TU = 4 units

We have to determine the measure of angle T and measure of angle S.

As we know that sum of inner angles of a triangle = 180°

So, m∠S + m∠T + m∠U = 180°

=> m∠S + m∠T = 180° - 90°

= 90°

Using the trigonometry formula, in right angles triangle STU,

tan (m∠T ) = US/UT

=> m∠T = √86/4

=>

Hence, required value are

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Complete question:

The above figure completes the question.

In the figure shown, what are ∠ and ∠? Triangle S T U has right angle U and is labeled as follows: S T, 10; T U, 4; and the long leg, unlabeled

1. The price-demand equation for the trumpets is:

   x = 238.18 - 1.09p

2. The manufacturer should set the price of each trumpet at $296.50  to break even        

3. The manufacturer should set the price of each trumpet at $138.63 to maximize profit.

In this problem, the manufacturer has conducted a customer survey and found out that the price of each trumpet affects the demand for it. We need to analyze this data and come up with a price-demand equation that helps the manufacturer set the price of each trumpet to maximize profit.

To start with, we need to assume a linear model, where the demand for the trumpets is directly proportional to the price. We can represent the demand as "x" and the price as "p". Using the data from the survey, we can form two linear equations:

110 = ap + b     (1)

128 = cp + d    (2)

Here, a, b, c, and d are constants that we need to find. We can solve these equations simultaneously to get the values of a, b, c, and d.

Subtracting equation (2) from equation (1), we get:

-18 = (a-c)p + (b-d)   (3)

Dividing both sides of equation (3) by -18, we get:

p = (d-b)/(c-a)          (4)

Using equation (4), we can find the value of p, which is the price at which the demand for trumpets is equal to the values obtained from the survey. Substituting the values from either equation (1) or (2) into equation (4), we get:

p = ($160.74 x 110 - $220.18 x 128)/(-18 x 110 + 18 x 128)

  = $186.46

Therefore, the price-demand equation for the trumpets is:

x = 238.18 - 1.09p

To answer the second question, we need to find the price of each trumpet at which the manufacturer will break even. In other words, the revenue earned from selling the trumpets should be equal to the total cost incurred in making and selling them.

We know that the one-time cost of buying equipment is $3274.78, and each trumpet costs $90.05 to make. Let's represent the break-even price as "[tex]P_{be}[/tex]". Then we can form the following equation:

110[tex]P_{be}[/tex] = 3274.78 + 110 x 90.05

Solving for [tex]P_{be}[/tex], we get:

[tex]P_{be}[/tex]= $296.50

Therefore, the manufacturer should set the price of each trumpet at $296.50 to break even.

To answer the third question, we need to find the price of each trumpet that maximizes the profit for the manufacturer.

The profit is given by the revenue earned minus the total cost incurred. Let's represent the profit as "P" and the price as "p". Then the profit equation becomes:

P = xp - (3274.78 + 90.05x)

To find the price that maximizes profit, we need to take the derivative of the profit equation with respect to p and equate it to zero.

dP/dp = x - 90.05 = 0

Solving for x, we get:

x = 90.05

Substituting this value of x into the price-demand equation, we get:

p = $138.63

Therefore, the manufacturer should set the price of each trumpet at $138.63 to maximize profit.

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Val's calculation of 1,787.52 m² is incorrect.

What is area of semicircle?

The area of a semicircle is half the area of the corresponding circle. If r is the radius of the semicircle, then the area of the semicircle is:

A(semicircle) = (1/2) π r²

To find the area enclosed by the figure, we need to add the areas of the square and the four semicircles.

The area of the square is:

[tex]A_{square}[/tex] = (56 m)² = 3,136 m²

The area of one semicircle is half the area of the corresponding circle, and the radius of the circle is equal to the side length of the square. Therefore, the area of one semicircle is:

[tex]A_{semicircle}[/tex] = (1/2) π (56/2)²= 1,554.56 m²

The total area enclosed by the figure is:

[tex]A_{total}[/tex] = [tex]A_{square}[/tex]+ 4 [tex]A_{semicircle}[/tex] = 3,136 + 4(1,554.56) = 9,901.44 m²

Therefore, Val's calculation of 1,787.52 m² is incorrect.

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Question:

Val needs to find the area enclosed by the figure. The figure is made by attaching semicircles to each side of a 56m​-by-56m square. Val says the area is 1,787.52m. Find the area enclosed by the figure. Use 3.14 for π. What error might have Val made?