Right Circular Cylinder Basics
The following figure shows a right circular cylinder:
Note that the cross-section of a right circular cylinder is a circle, and the axis of the cylinder is perpendicular to the base.
Below is an example of a right cylinder which is not circular (the cross-section is not a circle):
Below is an example of a circular cylinder which is not right (the cross-section is circular, but the axis is not perpendicular to the base):
From now on, we will only discuss right circular cylinders, and refer to them as simply cylinders. Observe that a cylinder’s dimensions can be specified by two parameters: the radius r of the flat face (or the base), and its height h, as shown below.