$\"\"$

The integral is $\"\"$ .

Volume of the solid, obtained by rotating about $\"\"$ -axis, the region under the curve $\"\"$ from $\"\"$ to $\"\"$ is

$\"\"$ .

Compare $\"\"$ with volume of the solid fromula.

Here $\"\"$ represents the region bounded by the cueve is rotated about the line $\"\"$ .

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

Solid obtained by rotating the region $\"\"$ about the line $\"\"$ .

$\"\"$

Solid obtained by rotating the region $\"\"$ about the line $\"\"$ .