r\) is the radius of the circular cross-section and \(h\) is the height of the cylinder. If the diameter, \(d\), of the circular cross-section is given, this is halved to find the radius.

A cylinder is a 3D shape with a circular cross-section and a curved surface. It has no straight edges. To find the volume or surface area of a cylinder, calculate it in the same way you would a prism.