What is of formula of a pentagon?

Answer 1

The formula for the area of a regular pentagon (a five-sided polygon with equal sides and angles) is given by ( A = \frac{1}{4} \sqrt{5(5 + 2\sqrt{5})} s^2 ), where ( s ) is the length of a side. For general pentagons, the area can be calculated using the formula ( A = \frac{1}{2} \times \text{Perimeter} \times \text{Apothem} ). The perimeter is the sum of all sides, and the apothem is the distance from the center to the midpoint of a side.