//
//	....
//	Goal:	read the radius, and out the area
//				and circumference of a circle
//
import java.text.DecimalFormat;	// p.18
import java.util.Scanner;
public class CircleCompute
{
	public static void main(String[] args)
	{
		DecimalFormat f2 = new DecimalFormat("0.00");
		Scanner input = new Scanner(System.in);
		double radius, area, circumference;

		System.out.print("Input radius: ");
		radius = input.nextDouble();
		area = Math.PI * radius * radius;
		circumference = 2.0 * Math.PI * radius;

		System.out.println("Area = " + f2.format(area));
		System.out.println("Circumference = " +
													f2.format(circumference));
	}
}