Question #N423
A circle has a radius of 5 units. What is the area of the circle in square units?
A. 5\pi
B. 10\pi
C. 25\pi
D. 50\pi
Correct Answer is: C
The area of a circle is given by the formula $A = \pi r^2$, where $r$ is the radius. Substituting 5 for $r$ in this formula gives $A = \pi(5)^2$, or $A = 25\pi$.