Question

@iPwnBunnies

Answer 1

This is simple. We're gonna break it up into two parts. Can you find the area of the rectangle?

Answer 2

can you tell me how to?

Answer 3

The area of a rectangle = length * width

Answer 4

how do i find the length and the width?

Answer 5

They're given...

Answer 6

:/

Answer 7

oh

Answer 8

area is 160

Answer 9

Good, we found the area of the rectangle. Do you know how to find the area of a circle?

Answer 10

pie times radius??

Answer 11

Almost. Area = pi*r^2

Answer 12

ok

Answer 13

Do you see that one side of the triangle makes up the diameter of that semicircle?

Answer 14

one side of the rectangle** lol

Answer 15

isnt the radius half of a number?

Answer 16

Yes, the radius is half of the diameter. What would the radius of our semicircle be?

Answer 17

5?? because 5 is half of 10

Answer 18

No, try again. The right side of the rectangle makes the diameter of the semicircle. The right side has to be congruent to the left side.

Answer 19

16 because 8 is half of 16

Answer 20

There ya go! So the radius of our semicircle is 8 cm. However, the formula for the area of the circle is for an entire circle, not half a circle. But it's ok.
Can you find the area of the entire circle, if there was one? Use the formula
A = pi*r^2

Answer 21

im confused now

Answer 22

Sorry, big wall of text lol. What would the area of a circle be with radius 8?

Answer 23

201.06/?

Answer 24

thats the answer i got for the problem

Answer 25

Right for that part. But you see, that would be the area of a WHOLE circle. We have half a circle with radius 8. What can you do to your answer to get the area of the semicircle?

Answer 26

split it??

Answer 27

What do you mean? lol