Question #N741
A circle has a diameter of 10. 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 = 2Ï€r, where r is the radius of the circle. Since the diameter is 10, the radius is 5. Therefore, the circumference is C = 2Ï€(5) = 10Ï€.