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# What is the area of cylinder?

###### Wiki User

###### August 22, 2014 2:36PM

The area of a cylinder is equal to pi times radius squared times height. It helps to remember that it's simply the area of a circle times height.

## Related Questions

###### Asked in Math and Arithmetic, Geometry

### How do you derive of surface area of cylinder?

The surface area of a cylinder can be derived from the area of
rectangle. If you 'unroll' a cylinder you have a shape of a
rectangle, similar to a sheet of paper. The width of the rectangle
will be the height of the cylinder and the length of the rectangle
will be the circumference of the cylinder end.
So, Area = length * width
where, width = height of cylinder & length =
circumference of cylinder end = PI*(Diameter of cylinder)
Therefore,
surface area of a cylinder = (PI)*(diameter of
cylinder)*(height of cylinder)
Hope that helps!