Formula
A = (n s²) / (4 tan(π/n))
For a regular polygon, n is the number of sides and s is the side length.
Example
A regular hexagon with side 4 has area ≈ 41.57 square units.
FAQs
What is a regular polygon?
It is a polygon with equal sides and equal interior angles.
Does it work for all polygons?
This formula is for regular polygons. Irregular polygons use different methods.