internal class Program
{
    private static void Main(string[] args)
    {
        //VARIABLES
        const double Pi = 3.142;
        double ConeVolume;
        double Radius;
        double Height;


        //User Input for Values Radius and Height
        //Radius
        Console.WriteLine("Please enter the radius of the cone");
            Radius = Convert.ToDouble(Console.ReadLine());

        //Range Check to ensure that a value is entered that is more than 0
        do
        {
            if (Radius < 1)
            {
                Console.WriteLine("Error! Invalid value Entered. Value must be Positive!");
                Console.WriteLine(" ");
                Console.WriteLine("Please enter the radius of the cone");
                    Radius = Convert.ToDouble(Console.ReadLine());
            }
        }
        while (Radius < 1);

        Console.WriteLine(" ");

        //Height
        Console.WriteLine("Please enter the height of the cone");
            Height = Convert.ToDouble(Console.ReadLine());

        //Range Check to ensure that a value is entered that is more than 0
        do
        {
            if (Height < 1)
            {
                Console.WriteLine("Error! Invalid value Entered. Value must be Positive!");
                Console.WriteLine(" ");
                Console.WriteLine("Please enter the height of the cone");
                    Height = Convert.ToDouble(Console.ReadLine());
            }
        }
        while (Height < 1);

        //Calculates the volume of the cone
        ConeVolume = Pi * (Radius * Radius) * (Height / 3);

        //Outputs the volume of the cone to 2 decimal places
        Console.WriteLine("The volume of the cone is " + String.Format("{0:0.00}", ConeVolume));

        Console.WriteLine("Press Enter to exit the program");
    }
}