C# Exercise: 59 Sphere, float

using System;  // Import the System namespace to use basic classes like Console

class Program  // Define the main class of the program
{
    static void Main()  // The entry point of the program
    {
        // Ask the user for the radius of the sphere
        Console.Write("Enter the radius of the sphere: ");  // Display prompt for radius
        float radius = Convert.ToSingle(Console.ReadLine());  // Read and convert the user's input for radius to a single precision float

        // Calculate the surface area of the sphere: 4 * pi * radius^2
        float surfaceArea = 4 * (float)Math.PI * (radius * radius);  // Use Math.PI for the value of pi

        // Calculate the volume of the sphere: (4/3) * pi * radius^3
        float volume = (4f / 3f) * (float)Math.PI * (radius * radius * radius);  // Volume formula using Math.PI for pi

        // Display the calculated surface area and volume
        Console.WriteLine($"Surface Area of the sphere: {surfaceArea:F2} square units");  // Display the surface area, formatted to 2 decimal places
        Console.WriteLine($"Volume of the sphere: {volume:F2} cubic units");  // Display the volume, formatted to 2 decimal places
    }
}