Okay you have the following graph handdrawn below.Originally Posted byyummycalc

The point where the graphs intersect is at,

.

You can look at the graph or solve,

--->by squaring both sides.

Thus, you are going to subtract from area of top curve the area of bottom curve.

Now you take the are from

Finally by the volume of revolution you need to square and multiply by thus,

The integral is,