### Home > A2C > Chapter 4 > Lesson 4.1.1 > Problem 4-11

4-11.

Examine the diagram below. Imagine spinning the rectangle around the *y*-axis. Think of a rectangular flap attached to the -axis so that the rectangle will revolve around the

*y*-axis.

*.*

Draw the resulting shape.

Find the volume of this shape.

Use the eTool below to help you visualize this shape.

Click the link at right for the full version of the eTool: *A2C 4-11 HW eTool*