## Basic College Mathematics (10th Edition)

cm: Unit of length $cm^2$: Unit of area $cm^3$: Unit of volume
cm: Unit of length (length to the power of 1). This is used to measure perimeter, circumference, radius, diameter, height, side lengths, etc. $cm^2$: Unit of area (length to the power of 2). This is used to measure areas of circles, squares, and other two-dimensional shapes (or surface areas of three-dimensional shapes). $cm^3$: Unit of volume (length to the power of 3). This is used to measure volumes of three-dimensional figures (spheres, pyramids, etc).