Question

What would be the answer to this question? I am kinda stuck on this one.

Answer 1

`c = 16\pi`

Explanation:

1: Substitute:

`c = 2\pi \: r \\ r = 8 \\ c = 2\pi * 8`

2: Solve the equation:

`c = 2\pi * 8`

Calculate:

`c = 16\pi`

Answer 2

C = 16pi

Explanation:

C = 2*pi*r where r =8

C =2*pi*8

C = 16pi