Question #N301
A circle has a radius of 6 units. What is the circumference of the circle?
A. 6\pi
B. 12\pi
C. 36\pi
D. 144\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 6 for $r$ gives $C = 2\pi (6) = 12\pi$.