### Home > CALC > Chapter Ch2 > Lesson 2.3.3 > Problem 2-128

2-128.

Rotate the flag shown below (created by the region under the curve for 0 ≤

*x*≤ 4) about the*x*-axis. Describe (and draw) the shape that is created and find its volume. Homework Help ✎

In order to visualize the resultant solid (and compute its volume), first dissect the flag into familiar-shaped pieces.

Use the eTool below to visualize the flag.

Click the link at right for the full version of the eTool: Calc 2-128 HW eTool