Question #N82

A circle is inscribed in a square with side length 8. What is the area of the circle?
A. 8\pi
B. 16\pi
C. 32\pi
D. 64\pi

Correct Answer is: B

The diameter of the circle is equal to the side length of the square, which is 8. Therefore, the radius of the circle is 4. The area of the circle is $\pi r^2 = \pi(4)^2 = 16\pi$.