The Amazing Hole in Sphere Problem

Geometry Level 3

A cylindrical hole, 6 inches long, has been drilled straight through the center of a solid sphere. What is the volume remaining in the sphere? If the answer is $$A \pi$$, type in the value of $$A$$ as your answer.

Note- No other data is needed to solve this.
This brilliant problem was first made famous by Martin Gardner with his ‘Mathematical Games’ column published in Scientific American.

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