The Area of an Octagon calculator computes the area of a regular Octagon given the length of sides (s).
INSTRUCTIONS: Choose units and enter the following:
Area of Octagon(A): The calculator returns the area in square meters. However, this can be automatically converted to other area units (e.g. square feet) via the pull-down menu.
A regular octagon is an eight sided polygon where all of the sides are the same length and the interior angles are the same (22.5°). Theis:
`A = 2 (1+ sqrt(2)) * s^2`