How do you calculate the area of a cylinder?

Answer 1

Pi times Radius times Radius times Height.

Area of cylinder depends on which side you want.

The top and bottom parts = Pi times Radius times Radius. (∩r2)

The round part = Pi times Diameter (or 2 * Radius) times Height (∩Dh)

Volume = Pi times Radius times Radius times Height (∩r2h)

Note: ∩=Pi

The area is the outer surface.

The surface of a right truncated circular cylinder is calculated as follows:

PI * r2 * h

where PI is the irrational: 3.15158...

r is the radius

h is the height

If it is a solid (or a closed shell) then you have to add the ends:

twice the area of the circular cross section: PI * r2
The volume of a cylinder is equal to Pi times the square of the radius times the height of the cylinder. Pi*r2*h. Pi*r2 is the area of the base of a cylinder. The surface area of a cylinder is 2*Pi*r2+Pi*2r*h. 2*Pi*r2 is the area of the base of the cylinder times two to account for both bases. Pi*2r*h is the circumference of the base times the height of the cylinder