Question #N940
A circle has a radius of 5 cm. What is the circumference of the circle, in terms of $\pi$?
A. $5\pi$ cm
B. $10\pi$ cm
C. $25\pi$ cm
D. $50\pi$ cm
Correct Answer is: B
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.