Geometry & Trigonometry
Intermediate

Curved Surface of a Cylinder

Side (curved) surface area of a cylinder.

Formula

A=2πrhA = 2\pi r h

Variables

rRadius
hHeight

Example

Radius 2, height 5: curved area = 2π·2·5 ≈ 62.8 square units.

Did You Know?

Peel the label off a soup can and it's a rectangle: height by circumference.

cylindersurface area