Question #N660
A circle has a radius of 5. What is the circumference of the circle?
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 = 2Ï€r, where r is the radius. Substituting 5 for r gives us C = 2Ï€(5), or C = 10Ï€.