$\"\"$

The volume $\"\"$ of a right circular cone is $\"\"$ .

Where

$\"\"$ is height of a right circular cone.

$\"\"$ is the radiusof a right circular cone.

Since height is twice of the radius, $\"\"$ .

Substitute $\"\"$ in $\"\"$ .

$\"\"$

Volume $\"\"$ of a right circular cone as a function of $\"\"$ as $\"\"$ . $\"\"$

Volume $\"\"$ of a right circular cone as a function of $\"\"$ as $\"\"$ .