$\"\"$

\

The equations are $\"\"$ and $\"\"$ .

\

The solid is revolving about the line $\"\"$ .

\

Find the intersection points.

\

$\"\"$ and $\"\"$ .

\

$\"\"$

\

Washer method:

\

Volume of the solid is $\"\"$ .

\

Here $\"\"$ , $\"\"$ .

\

Integrating between $\"\"$ and $\"\"$ .

\

$\"\"$

\

Volume of the solid is $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

Volume of the solid is $\"\"$ .