$\"\"$

The region is bounded by the curves $\"\"$ , $\"\"$ and $\"\"$ .

The solid is revolving about the $\"\"$ -axis.

Washer method: $\"\"$ .

Find the volume of the solid in $\"\"$ .

$\"\"$

$\"\"$ .

$\"\"$

Find the value of $\"\"$ in the $\"\"$ that divide the solid into three parts of equal volume.

$\"\"$ .

$\"\"$

$\"\"$ divide the solid into three parts of equal volume.

$\"\"$

$\"\"$ divide the solid into three parts of equal volume.