Question #N707
A circle is inscribed in a square. The side length of the square is 10. What is the area of the circle?
A. $\pi$
B. $10\pi$
C. $25\pi$
D. $100\pi$
Correct Answer is: C
The diameter of the circle is equal to the side length of the square, which is 10. The radius of the circle is half the diameter, or 5. The area of a circle is given by the formula $\pi r^2$, where r is the radius. Therefore, the area of the circle is $\pi(5^2) = 25\pi$.