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2-121.

A large cylinder, with a hollow cylindrical hole in the center.

Compute two volumes and subtract: a large solid cylinder − the cylindrical hole.

Both cylinders have a height of 3.

The large cylinder has a radius of 2. The small cylinder has a radius of 1.

Use the eTool below to visualize the flag.
Click the link at right for the full version of the eTool: Calc 2-121 HW eTool