Question #N947
A circle has a radius of 5 centimeters. What is the circumference of the circle, in centimeters? (Express your answer in terms of $\pi$.)
A. 5$\pi$
B. 10$\pi$
C. 25$\pi$
D. 50$\pi$
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 $r$ gives $C = 2\pi(5) = 10\pi$.