Question

What is the exact area of a circle with a diameter of 18 feet?

A.
36π square feet

B.
81π square feet

C.
324π square feet

D.
1296π square feet

Answer 1

A=pi x r^2
d=2r
18=2r
radius=9

Answer 2

the are = pi * r^2

Answer 3

*area

Answer 4

I got...36 is that right?

Answer 5

no

Answer 6

Diameter is 18 so the radius =D/2=18/2=9
the area = pi * 9^2=81 pi

Answer 7

I know its 254 but thats not in my answer choices~

Answer 8

I get it now! than you!!!

Answer 9

*thank

Answer 10

YW