//
//
import java.util.Scanner;
import java.text.DecimalFormat;
public class Cylinder
{
	private double radius, height;
	public Cylinder()
	{	radius=1; height=1; }
	public void set(double r, double h)
	{	radius=r; height=h; }
	public double area()
	{	return 2*Math.PI*radius*height; }
	public double volume()
	{ return Math.PI*radius*radius*height;	}
	public void writeOut()
	{
		DecimalFormat f1 = new DecimalFormat("0.0");
		System.out.println("A = " + f1.format(area()));
		System.out.println("V = " + f1.format(volume()));
	}
	public static void main(String[] args)
	{
		Scanner input = new Scanner(System.in);
		Cylinder one = new Cylinder();
		double r, h;
		System.out.print("Input r, h: ");
		r = input.nextDouble();
		h = input.nextDouble();

		while(r>=0 && h>0)
		{
			one.set(r, h);
			one.writeOut();
			System.out.print("Input r, h: ");
			r = input.nextDouble();
			h = input.nextDouble();
		}

		System.out.println("\n\nDone.\n\n");
	}
}