Calculate the Area of a Pentagon

In this page you can calculate the Area of a Pentagon.

Area of a Pentagon formula: A = (1/4)*(5*(5+2(5)^0.5*a²)^0.5) where a represents the side of the Pentagon. A pentagon is a polygon with five sides and five angles. Penta and Gonia, the two words that make up the term "pentagon," both denote five angles. A pentagon's sides come together to create a shape from end to end. A pentagon thus has five sides.

Enter the side of a Pentagon: