What is the approximate area of a semicircle with radius of 21 ft? Use 3.14

Answers

Answer 1

Answer:

692 ft^2

Step-by-step explanation:

Area of a circle = (pi)(radius)^2

Here,

Area of the circle = (3.14)(21 ft)^2 = 1385 ft^2

Area of half this circle = area of the semicircle = 1385 ft^2  /  2, or

Area of semicircle = 692 ft^2


Related Questions

The number of hours you study for an exam impacts your grade. What is a reasonable value of the range
a.2.16
b.2/3
c.-15
d.80

Answers

Answer: 80

Step-by-step explanation:

Answer:

b.2/3

Step-by-step explanation:

I think this would be the most reasonable.

Can somebody help me

Answers

Answer:

22x

Step-by-step explanation:

Step-by-step explanation:

13) x = 17sin(59°)

x = 14.57

14) x = 17sin(60°)

x = 14.72

Guys i need these answers badly so i would appreciate if someone responded
Thanks !

Answers

Answer:

Y is the midpoint of XZ, so XY = YZ

20x - 30 = 12x + 1020x - 12x = 10 + 308x = 40x = 5

Find XZ:

XZ = 2(XY) = 2(20*5 - 30) = 140

The answer is:

x = 5 and XZ = 140

------------------------

B is the midpoint of AC, so AB = BC

4x + 3 = 2x + 154x - 2x = 15 - 32x = 12x = 6

Find AC:

AC = 2(AB) = 2(4*6 + 3) = 54

The answer is:

x = 6, AC = 54

A cone has a height of 18 yards and a diameter of 28 yards. What is its volume?

Answers

Answer:

504

Step-by-step explanation:

I need helpppppp please !!!!!

Answers

Answer:

Step-by-step explanation:

I don't know if my answer is sorry if it is i think its B

hii can someone please help me on this problem?

Answers

Answer:

Please write the problem

Step-by-step explanation:

So i can help you :)

does the point (4,-2) lie on the circle with a center at (4,0) and a radius of 2?

Answers

Answer:

Yes

Step-by-step explanation:

It lies on the circle because the radius is 2 and the point goes down two units just like the radius

Answer:

yes

Step-by-step explanation:

the radius extends out 2 points throughout the entire circle therefore -2 will be reached as it is 2 units below the center of (4, 0)

What is the axis of symmetry and vertex?
y=-3x2-24x-42

Can someone help me pls

Answers

Answer:

okay can you tell me if the first -3x and second 24x are multiply or are just letters and I than I will post the answer

Select the correct answer.
If the graph of f(x) = 9^x is shifted 7 units down, then what would be the equation of the new graph?

Answers

Answer: g(x)=9^x-7

Step-by-step explanation:

what percent is 300 of 1l​

Answers

Answer:

30%

Step-by-step explanation:

1L = 1000ml

--------------------

100%-> 1000

1%-> 10

300 ÷ 10 = 30%

Which point has coordinates (-2, 3)?

Answers

Answer: I need a picture to go along with it because I see nothing.

Step-by-step explanation:

Shannon is making a rocket by folding a paper. She needs a piece of paper with a area of 84 square inches.Shannon has a piece of paper with a length of 14 inches. She will trim the paper to make it the correct width. What will the width of the paper need to be

Answers

Answer:

the 42 width of the paper need

Carly missed 22.5% of the questions on
the last test, and the rest of the questions
were correct. She had 31 questions
correct. How many questions were on the
test?

Answers

Answer:

40 questions

[tex]correct \: questions = (100 - 22.5)\% \\ = 77.5\% \\ let \: total \: questions \: be \: x \\ = > 77.5\% \times x = 31 \\ \frac{77.5}{100} \times x = 31 \\ 77.5x = 3100 \\ x = 40 \\ = 40 \: questions[/tex]

The core of the Sun is about 174,000 miles across.
What is 174,000 in scientific notation?
O A. 174 x 103
OB. 17.4 x 103
O C. 17.4 x 104
OD. 1.74 x 105
O E. 1.74 x 106

Answers

Answer:   D: 1.74 x 105

What is the median for the boys plot?

Answers

Answer:

4

Step-by-step explanation:

first you put the numbers in order from least to greatest

1,1,1,1,2,2,2,4,12,13,15,15,15,16,16

next find the middle number(s)

1,1,1,1,2,2,2,4,12,13,15,15,15,16,16

the middle number is your median

*if you have 2 middle numbers just add the then divide it by 2 to find the median

what is an integer function?

Answers

Answer:

The INTEGER function returns an integer representation of a number or character string in the form of an integer constant.

Step-by-step explanation:

Compute the range of the box and whisker plot. Type a numerical answer in the space provided. DO not type spaces in your answer.

Answers

Answer:

94

Step-by-step explanation:

The range of a dataset is the difference between the maximum and minimum value :

The staring point of the whisker is the minimum = 4

The end point of he whisker is the maximum = 96

The range of the box and whisker plot is Hence,

Minimum = 4

Maximum = 98

Range = 98 - 4

Range = 94

On average, Shawnte drinks
of the 6- ounce glass
2
of water in
12 / 2
hours. How much water does she drink in
an hour?
Please help don’t send a link

Answers

Answer A 0.75 ounces

Step-by-step explanation:

shawnte drinks 4.5 ounces in an hour so, the correct answer is a

What is the sum of the interior angles of an octagon?

Answers

Answer:

1080 degrees

180(n-2) = sum of all interior angles

180(6) = 1080

Answer:

1080°

Step-by-step explanation:

What is the angle sum of Octagon?

1080°

The sum of all the internal angles of any octagon is 1080°. As with all polygons, the external angles total 360°.

A=2(1+2)a2 this is the formula

PLS HELP PLSS WILL MARK BRAINLEST

Answers

i think it is w=10t for this question

How do you solve 2y=1/2(98x+38)?

Answers

Answer:

y=24.5x+9.5

Step-by-step explanation:

simplify

2y=1/2(98x+38)

distribute 1/2

2y=49x+19

divde the each term with 2

y=24.5x+9.5

Can someone pleaseeee help and if you’re correct i’ll give brainliest

Answers

Answer:

Rows: 3+3+3+3=12

Columns: 4+4+4=12

Use the product rule to simplify the radical.
[tex]\sqrt{x} 336[/tex]

Answers

Hopes this helps:

Answer: x^168

Please mark as brainlist if it’s right

How do I do this? Don’t know what to do with the 50

Answers

Answer:

I think it resembles the space of the primmer if that makes sense but basically I don't think you have to mind it. I think you can just regard it    

Step-by-step explanation:

Answer:

70

Step-by-step explanation:

180 -60 -65 = 55

180 - 55 -50 = 75

180 - 75 - 35 = 70

ILL MARK BRAINIEST IF YOU DO ONLY NUMBER 8 DO NOT DO 7!!!!

Answers

Answer and Step-by-step explanation:

8. We want to solve for a of the trapezoid area formula.

A = [tex]\frac{h}{2} (a + b)[/tex]

First off, we need to multiply both sides by [tex]\frac{2}{h}[/tex] to cancel out the [tex]\frac{h}{2}[/tex].

[tex]\frac{2A}{h}[/tex] = a + b

Now, we need to subtract b from both sides.

[tex]\frac{2A - b}{h}[/tex] = a

We get the answer to be:

I. a = [tex]\frac{2A - b}{h}[/tex]

#teamtrees #PAW (Plant And Water)

What is the approximate volume of the cylinder? Use 3.14 for

Answers

Step-by-step explanation:

it's 452.16 because it's the closest estimate

5. A card is chosen from a standard
deck, then a die is rolled. How many
outcomes are possible?

Answers

Answer: 64

Step-by-step explanation:

The total possible outcomes will be 312.

Possible outcomes:

"A list of resulting possibilities from an event".

How to find possible outcome?

To find the total number of outcomes for two or more events, multiply the number of outcomes for each event together.

According to the given question

A card is chosen from a standard deck and a die is rolled.

Therefore,

A deck of 52 cards have 52 different possibilities .

A six sided die has 6 possibilities.

According to the question:

possible outcomes[tex]=6[/tex]×[tex]52[/tex][tex]=312[/tex]

Hence, the possible outcomes is 312.

Learn more about the possible outcomes:

https://brainly.ph/question/10666110

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Express (2y)3/2 in radical form.

Answers

Answer:

[tex](2y)^{2/3} =\sqrt[2]{2y^{3} }[/tex]

Step-by-step explanation:

Given: [tex](2y)^{3/2}[/tex]

Rule: [tex](a)^{b/c}=\sqrt[c]{a^{b} }[/tex]

Therefore: [tex](2y)^{2/3} =\sqrt[2]{2y^{3} }[/tex]

HELP ME HEP ME PLEASEEEE IM DESPRATE

Answers

Answer: 30 degrees

Step-by-step explanation:

90 - 60 = 30

Write the equation of a line parallel to the line y = 4x - 3 and passing through the point (0,10).

Answers

Answer:

y=4x + 10

Step-by-step explanation:

Parallel lines always have the same slope. The point that you have is the y-intercept because the x is 0. So now you have both the slope and y- intercept and just need to sub it into the y=mx+b equation

The equation of line passes through the point (0, 10) will be;

⇒ y = 4x + 10

What is Equation of line?

The equation of line in point-slope form passing through the points

(x₁ , y₁) and (x₂, y₂) with slope m is defined as;

⇒ y - y₁ = m (x - x₁)

Where, m = (y₂ - y₁) / (x₂ - x₁)

Given that;

The point on the line are (0, 10).

And, The parallel line is,

⇒ y = 4x - 3

Now,

Since, The equation of line passes through the point (0, 10).

So, We need to find the slope of the line.

Since, The slope of the parallel line is same.

Hence, Slope of the line is,

y = 4x - 3

m = dy/dx = 4

m = 4

Thus, The equation of line with slope 4 is,

⇒ y - 10 = 4 (x - 0)

⇒ y - 10 = 4x

⇒ y = 4x + 10

Therefore, The equation of line passes through the point (0, 10) will be;

⇒ y = 4x + 10

Learn more about the equation of line visit:

https://brainly.com/question/18831322

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