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.

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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.