Area of a Pentagon Calculator

A closed and flat two-dimensional surfaced shape with five angles and five sides is called as pentagon. Area of a Pentagon is the amount of space occupied by the pentagon. Below given an Area of a Pentagon Calculator that helps you in calculating the area of a five-sided pentagon. Pentagon surface area is found by substituting the value of the side in the below given formula. It can also be calculated using apothem length (i.e) the distance between the center and a side.

Pentagon Surface Area Calculation

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A = 1/4 x √(5(5 + 2 x √(5))) x s2 Where, A = Pentagon Surface Area s = Side Length Area of a Pentagon


A pentagon having one of its side length as 15 mm.
Area of a Pentagon = 1/4 x √(5(5 + 2 x √(5))) x 152
= 387.1074mm2

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