How to Calculate the Volume of an Octagon

By Bryan Roberts

An octagon is a shape with eight sides that are all the same length. By knowing the length of just one side of the shape, you can learn a great deal about the octagon's other properties, such as its area. Additionally, if you are dealing with a three-dimensional octagon, you can discover its volume with little information.

Multiply the length of one side of the octagon by itself.

Multiply the number you calculated in Step 1 by 4.8284. This is the area of the octagon.

Multiply the area of the octagon by its depth to find its volume.

About the Author

Bryan Roberts began his love affair with comedy in 2003 as a writer and performer for Austin's No Shame Theatre. Since then, he has appeared with several different sketch groups (Hoover's Blanket, Ghetto Sketch Warlock). His most recent achievements are the award-winning improv show Guilds Of Steel, which he created and co-directed, and his position of writer/actor in the Coldtowne Theater Mainstage Sketch Show.