/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package inputstring;
import java.util.Scanner;
import java.text.*;
/**
 *
 * @author MPA3
 */
public class InputString {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {

        double area,rad;
        final double pi = 3.142;
        Scanner scan = new Scanner(System.in);
        DecimalFormat df = new DecimalFormat("0.00");
        System.out.print("Input Radius: ");
        rad = scan.nextDouble();
        area = pi * rad * rad;
        System.out.println("Area of circle: "+df.format(area));





    }
}