Question #N518
A circle has a radius of 5 cm. What is the circumference of the circle, in centimeters? (Express your answer in terms of $\pi$.)
A. $\pi$
B. 5$\pi$
C. 10$\pi$
D. 25$\pi$
Correct Answer is: C
The circumference of a circle is given by the formula $C = 2\pi r$, where $r$ is the radius. Substituting $r = 5$ cm, we get $C = 2\pi(5) = 10\pi$ cm.