### Home > APCALC > Chapter 2 > Lesson 2.1.1 > Problem 2-8

2-8.

The shaded region at right represents a flag (the upper boundary is a semi-circle). Calculate the volume of the solid formed when the flag is rotated about the pole. In a complete sentence, describe the rotated shape. To help you visualize this, use the

It's a sphere on the outside with two cones removed from the inside.

The radius of the sphere is

Use the eTool below to visualize the flag.

Click the link at right for the full version of the eTool: *Calc 2-8 HW eTool*