C = n * a
S = (na 2)/4 * cot(π/n)
C = circumference
S = surface area
a = side
h = height
r = radius
n= number of sides
Polygon is a plane shape (two-dimensional) with straight sides. Examples: triangles, rectangles and pentagons.
Enter unit e.g.: inch
Enter side "a"
Enter number of sides
Round to number of decimals places