How can you solve for finding the side measurements of an octagon-shaped deck that is 10 feet long and 10 feet wide. Thanks for your help. Linda Nettles, I'm not sure of the level of this question. I am an instructor at Florida Community College of Jacksonville in the Vocational Preparatory Instruction Lab.

If you look at The sides of an octagon, a similar question that we received last year, you will see a construction that allows you to find the side length. In that case the octagon was 4.375 by 4.375. (I don't know the units.) The side of a regular octagon of diameter D feet is units.