Question #N821
A circle has a radius of 5. What is the circumference of the circle?
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 $C = 2\pi (5) = 10\pi$.