## GMAT Problem Solving 94: Sphere, circles, and triangles

Try this GMAT problem solving question that relies on a identifying circles and creating right triangles.

A ball was floating in a lake when the lake froze. The ball was removed (without breaking the ice), leaving a hole \(24\) cm across at the top and \(8\) cm deep. What was the radius of the ball (in centimeters)?

- \(\quad 8 \)
- \(\quad 12 \)
- \(\quad 13 \)
- \(\quad 8\sqrt{3}\)
- \(\quad 6\sqrt{6} \)