Question

What is the approximate circumference of a circle with a radius of 40 inches? Use π ≈ 3.14.

A.
125.6 inches

B.
251.2 inches

C.
502.4 inches

D.
5024 inches

Answer 1

To find cirfumfrence we use the formula C = $2 \pi r$
Soooo
$\pi$ = 3.14
r = 40 inches
So now we plug it in :P
C = 2 x 3.14 x 40 = 251.2 
answer = B.) 251.2 inches