import java.util.Scanner;
import java.math.*;

public class ContainerCalculator
{
    public static void main(String[] args)
    {
        double r, h, d, volume;
        Scanner scnr;

        System.out.println("Welcome to the Container Calculator!");
        System.out.println("====================================");
        scnr = new Scanner(System.in);

        System.out.println("Enter the diameter of a cylinder(in centimeters): ");
        d = scnr.nextDouble();
        System.out.println("Enter the height of a cylinder (in centimeters): " );
        h = scnr.nextDouble();

        r = 1/2 * d;
        volume = ((22*r*r*h)/7);
        System.out.println("your volume is: " + volume);

        }
}