// Ball pit program using System; class Submission { // ------------------------- // Subprograms // ------------------------- // Function to return the volume of the ball pit static double ball_pit_volume(double ball_pit_radius, double ball_pit_height) { double pi = 3.14; return pi * (ball_pit_radius * ball_pit_radius) * ball_pit_height; } // Function to return the volume of a ball static double ball_volume(double ball_radius) { double pi = 3.14; return (4.0 / 3.0) * pi * (ball_radius * ball_radius * ball_radius); } // ------------------------- // Main program // ------------------------- public static void Main(string[] args) { double ball_pit_radius = 1; // Meters double ball_pit_height = 0.2; // Meters double ball_radius = 0.05; // Meters double packing_density = 0.75; // Volume taken up by the balls int balls = (int)((ball_pit_volume(ball_pit_radius, ball_pit_height) / ball_volume(ball_radius)) * packing_density); Console.WriteLine("You need " + balls + " balls to fill the ball pit."); } }