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Area of an Octagon Box

If you happen to know the length of a regular side of an octagon box, meaning all the sides are of the same length, then you can quite easily find the area of the octagon. This is also part of the volume of an octagon box calculation.

Here's what you do. Take the length of one side in inches, any side, square it, then multiply by 4.8284. The result will be area in square inches of this regular octagon figure.

A = s squared times 4.8284

Then if you want to find the volume of this octagon box, multiply the area of the octagon times the depth to find the volume. Not too difficult, eh?

V = A times depth

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