How much fencing is needed to enclose a circular pond with diameter 12.5 feet?

A.
37.5 feet

B.
19.625 feet

C.
78.5 feet

D.
39.25 feet****

3 answers

Would it be 12.5 / pi?
Every time I try it, the answer ends up being 3.980
nevermind, I got it. I keep asking way to much questions lol. This will be my last one for today haha.
the harder you work the easier it will be