Question

If C=πd and d=2r, then what is C when r is 4 meters?

Answer 1

C = 8π

Explanation:

C = πd

d = 2r

Given : r = 4

d = 2r and r = 4

Plug in 4

d = 2(4)

2(4) = 8

D = 8

We then have C=πd and d = 8

So plug in 8

C = 8π