Area of Octagon Calculator

Octagon is an eight sided polygon. It is a two-dimensional figure connected using straight lines. A regular polygon has equal length on all sides and equal internal and external angles of about 135 degrees and 45 degrees respectively. Sides of the regular octagon are always congruent. Use the below online area of octagon calculator to find the total space occupied by the octagon. In the regular octagon calc, find A by providing the side length as input.

Regular Octagon Calc Find A

length
area

Octagon is an eight sided polygon. It is a two-dimensional figure connected using straight lines. A regular polygon has equal length on all sides and equal internal and external angles of about 135 degrees and 45 degrees respectively. Sides of the regular octagon are always congruent. Use the below online area of octagon calculator to find the total space occupied by the octagon. In the regular octagon calc, find A by providing the side length as input.

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Formula:

Octagon Perimeter
Area = 2 × s2 × ( 1 + √(2) ) Where, s = Side

Example:

Find the area of the octagon if the side length is 5 cm?

Solution:

Area = 2 × 52 × ( 1 + √(2) )
= 120.7107cm2


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