text: Side of a regular n | C # implementation of the approach ; Function to calculate the side of the polygon circumscribed in a circle ; Driver Code ; Total sides of the polygon ; Radius of the circumscribing circle
code: using System ; class GFG { static double calculateSide ( double n , double r ) { double theta , theta_in_radians ; theta = 360 / n ; theta_in_radians = theta * 3.14 / 180 ; return Math . Round ( 2 * r * Math . Sin ( theta_in_radians / 2 ) , 4 ) ; } public static void Main ( ) { double n = 3 ; double r = 5 ; Console . WriteLine ( calculateSide ( n , r ) ) ; } }