# Understanding Area, Volume and Common Geometry

## Chapter 2 - Physics in Industrial Instrumentation

Some units of measurement for area and volume are nothing more than compounded linear units. Ten centimeters is an expression of distance, while ten square centimeters (cm$$^{2}$$) is an expression of area, and ten cubic centimeters (cm$$^{3}$$) is an expression of volume. It important to note that the modifiers “square” and “cubic” do not in any way imply the object in question is square or cubic in shape. It is perfectly reasonable to measure the area of a circle, for instance, using the unit of square centimeters.