Question #N265
A circle has a radius of 5 cm. What is the circumference of the circle, in terms of $\pi$?
A. $5 \pi$
B. $10 \pi$
C. $25 \pi$
D. $100 \pi$
Correct Answer is: B
The circumference of a circle is given by the formula $C = 2 \pi r$, where $r$ is the radius. Substituting 5 for $r$, we get $C = 2 \pi (5) = 10 \pi$.