Volume of the Hollow cylinder

Cylinder :

A cylinder is a closed solid that has two parallel (usually circular) bases connected by a curved surface.

Formulae:

Volume of the HollowCylinder= πh(R²-r²), where R-outer radious,r-inner radious h-height

Example:
	Find the volume of the given hollow cylinder.
	Height=15, Outer Radious=8 , Inner radious=6
	Volume of the HollowCylinder= πh(R²-r²),
	= 3.14 * 15 *(8²-6²)
	= 3.14 * 15 *(64-36)
	= 3.14 * 15 *(64-36)
	Volume of the HollowCylinder=1318.8000

Volume of the HollowCylinder= πh(R²-r²), where R-outer radious,r-inner radious h-height.
Enter the Outer Radious of the cylinder:
Enter the inner Radious of the cylinder:
Enter the Height of the cylinder:
Volume of the cylinder: