A regular polygon is an n-sided polygon in which all sides are of the same length and all angles have the same degree(i.e the polygon is both equilateral and equiangular). The formula for computing the area of a re polygon is
n * s2(s squar)
area = -----------------------------------------
4 * tan(pi/n)
write a function that return the area of a regular polygon using the following header.
double area(int n, double side.
write a main function that prompts the user to enter the number of sides and the side of a regular polygon, and display the area.
The program needs to allow the user to run the calculations as needed until the user chooses to end the program.