import java.util.Scanner;
public class volumeOfCylinder
{
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);
        System.out.println("Enter radius of cylinder");
        double radius=sc.nextDouble();
        System.out.println("Enter height of cylinder");
        double height=sc.nextDouble();
        double pi=22/7;

        double volume=pi*(radius*radius)*height;
        System.out.println("Volume of the cylinder="+volume);
    }
}