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3 years ago

Find the area of the semicircle.

Mathematics

1 answer:

Oliga [24]3 years ago

7 0

So since this is half a circle, we have to divide the area of a circle by 2. So that would give us 1/2 pi* r^2. We find the radius by dividing 10 by 2. So the radius is 5. Plugging that in for r in 1/2(pi)(r^2) we get 1/2(pi)(5^2) which is 25pi/2. Turning pi into 3.14 we have (25(3.14))/2 which is 78.5/2 which is approximately 39.25 units^2

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What is 36 divide by 837

Dominik [7]

You want to take 837 out of 36.
you can get 837 out of 3 0 times so you tack on the 6(0)
you get 837 out of 36 0 times so you tack on a zero(00)
Because you are adding a 0, you are now creating a decimal
you get 837 out of 360 0 times so you tack on a 0 (00.0)
You get 837 out of 3600 4 times so you put the 4 after the 0s (00.04)
Now you multiply 4 and 837 to get 3,348 and take that away from 3600 to get 252
Not you tack on a 0.
You get 837 out of 2520 3 times so you tack the 3 on behind the 4. (0.043)
Because of significant digits, your answer is 0.043

5 0

4 years ago

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Solve for h: v = pi squared multiplied by h h = V multiplied by pi over r squared h = V over pi r squared h = V plus pi r square

alexandr1967 [171]

Hello from MrBillDoesMath

Answer:

See below for steps.

Discussion:

As I understand the problem statement we have a cylinder of height h and radius r. The volume of the cylinder is given by the formaul:

V = (pi * r^2) h

Divide both sides by (pi * r^2):

V\ (pi * r^2)) = ( (pi * r^2) * h ) \ ((pi * r^2) =>

V\ (pi * r^2) = 1 * h = h as (pi * r^2) \ (pi * r^2))

Therefore, h = V\ (pi * r^2)

Thank you,

Mr. B

7 0

3 years ago

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What is the definition of proof in geometry

oksian1 [2.3K]

I'm guessing just to show that you did your work to get the answer.

4 0

3 years ago

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Which inequality is graphed below

Aneli [31]

Answer:

Step-by-step explanation:

> is a dotted line and the area above it is shaded

< is a dotted line and the area below it is shades

≥ is solid line with the area above shaded

≤ is a solid line with the area below it shaded

The graph shows characteristics of ≥, and C is the only answer with ≥ in it

6 0

3 years ago

50 points!!!Adam recorded the number of flower blooms on each of his ten rose bushes. 9, 10, 4, 12, 15, 17, 18, 10, 12, 13If he

lyudmila [28]

Answer:

Step-by-step explanation:

9, 10, 4, 12, 15, 17, 18, 10, 12, 13

Putting the numbers from smallest to largest

4,9, 10, 10, 12 12, 13, 15, 17, 18,

The median is the middle number

There are 10 numbers

4,9, 10, 10, 12 12, 13, 15, 17, 18,

The middle number is between the 12's, so it is 12

6 0

4 years ago

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