The area of the curved surface (the rectangle) is 2πr × 𝒉. The radius is 5 m and the height is 9 m. When using the π button, the area of the curved rectangular face is 2 × π × 5 × 9 ...

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 as a prism.