Question

What is the radius of a circle whose circumference is 16π?

A. 32π
B. 16
C. 8 π
D. 8

Answer 1

D

Explanation:

Remark

The circumference of a circle is 2 * pi * r

Given

The circumference (C) = 16 * pi

Solution

2 pi r = 16 pi Divide by 2*pi

r = 16 pi / (2*pi)

r = 8