Geometry

Question Analysis
This question involves using the volume formula of a cone to solve for an unknown radius.
The main focus is on rearranging the formula and performing inverse operations correctly.

Key Concept Explanation
Given , we can solve for when and are known.
First, we multiply both sides of the equation by to get , then divide both sides by to isolate , and finally take the square root of both sides to find .

Step - by - Step Solution
Start with the volume formula . Given and , substitute these values:

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