# Find the area of the cylinder

If you’ve ever seen a jar, then you know what a cylinder looks like. A cylinder is a three-dimensional figure with two parallel circles of the same size at the top and bottom. The upper and lower parts of the cylinder are called bases. The height of the cylinder is the distance between the two bases. For all cylinders, the sides are perpendicular to the bases.

Calculate the total area cylinder surfaces, through radius and height

**Rotation radius r**

**Height h**

Calculate the area of the side surface of the cylinder through the radius and height

**Rotation radius r**

**Height h**