find the volume of a regular polygon circumscribed around a cylinder in csharp

main.cs
using System;

namespace PolygonCylinderVolume
{
    class Program
    {
        static void Main(string[] args)
        {
            // Inputs
            int n = 6; // Number of sides of the polygon
            double r = 5.0; // Radius of the cylinder
            double h = 10.0; // Height of the cylinder

            // Calculations
            double a = 2 * r * Math.Sin(Math.PI / n); // Side length of the polygon
            double A = 0.5 * n * a * r; // Area of the polygon
            double V_cylinder = Math.PI * r * r * h; // Volume of the cylinder
            double V_polygon = A * h; // Volume of the polygon
            double V = V_cylinder - V_polygon; // Volume of the polygon circumscribed around the cylinder

            // Output
            Console.WriteLine("The volume of the regular polygon circumscribed around the cylinder is " + V);
        }
    }
}
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