Question

Evaluate C = 2 r, for r = 8.

Answer 1

Answer:

C = 16

Step-by-step explanation:

Substitute r = 8 into the equation for C, hence

C = 2r = 2 × 8 = 16

Answer 2

Answer:

C=16

Step-by-step explanation:

If I cunderstand your question I think the equation is

$C=2r$

If we sub 8 in for r, we get

$2 *8=C$