Question

can someone help me

Answer 1

A = pi * r^2

Answer 2

Radius is half the diameter.

18 / 2 = ?

Answer 3

do i do 3.14 * that =9

Answer 4

No, we don't simplify pi.

Answer 5

Yes, so 9 is the radius.

Answer 6

do i do 3.14*9^2

Answer 7

\(A = \pi r^2\)

\(A = 9^2\pi\)

Simplify \(9^2\)

Answer 8

No, we don't simplify pi.

Answer 9

81

Answer 10

the answer is 81 then because 9*9=81

Answer 11

Yep, so the answer is \(81 \pi\)

Answer 12

thanks