Question #N898
A circle has a radius of 5 cm. What is the circumference of the circle, in terms of pi?
A. 5Ï€
B. 10Ï€
C. 25Ï€
D. 50Ï€
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, we get C = 2Ï€(5) = 10Ï€.