Question

Help with two Geometry questions? (questions inside) [will MEDAL & FAN]

Answer 1

@mathstudent55

Answer 2

Well find the area of the whole circle and multiply that by 3/4 because you only want 3/4 of the circle

Answer 3

do you know how to find the area of a circle?

Answer 4

A = Pi r^2 right

Answer 5

yep so what is the area of the circle?

Answer 6

Would the area of the circle be 50.27 ?

Answer 7

remember is says to leave your answer in terms of pi.

Answer 8

like said don't substitute 3.14 in for pi. So when it is pi*r^2 leave it as r^2*pi (just simplify r^2)

Answer 9

so do 4^2?

Answer 10

If so that'd be 16 then.

Answer 11

16pi

Answer 12

Now the shaded region takes up how much of the circle?

Answer 13

The shaded region takes up 3/4 of the circle. So the area of the shaded region is 3/4A where A is the circle's area. So substitute and get the answer. What is the answer?

Answer 14

If you don't know how I got 3/4 just ask.

Answer 15

lol I see how you got 3/4, I can look at the diagram and see that but the answer is

Answer 16

the answer would be 3/4*16pi or 12pi

Answer 17

sorry for not posting :(

Answer 18

the circle for problem 2 would look like a circle cut in half

Answer 19

if you don't know why ask me

Answer 20

so then you find the area of 1/2 of the circle. so you have that the radius is 1/2(14)=7 and the area of the whole circle is 7^2*pi and we need half of that

Answer 21

remember keep the pi. The answer should be in the form x*pi