$\"\"$

\

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

\

Find the volume of the solid generated by revolving the region about $\"\"$ -axis.

\

The volume of the solid is $\"\"$ .

\

Substitute $\"\"$ and $\"\"$ and the interval $\"\"$ .

\

$\"\"$

\

$\"\"$

\

Apply formula : $\"\"$ .

\

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

\

$\"\"$

\

$\"\"$

\

Substitute the value in $\"\"$ .

\

$\"\"$

\

Therefore, the volume of the solid is $\"\"$ .

\

$\"\"$

\

The volume of the solid is $\"\"$ .