Problem:
Circle

Write a program which calculates the area and circumference of a circle for given radius r.

Input

A real number r is given.

Output

Print the area and circumference of the circle in a line. Put a single space between them. The output should not contain an absolute error greater than 10-5.

Constraints

0 < r < 10000

Sample Input 1

2

Sample Output 1

12.566371 12.566371

Sample Input 2

3

Sample Output 2

28.274334 18.849556

Solution in JAVA (judge verdict: Wrong Answer)

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        double r = 0;
        double circle_area = 0.0;
        double circumference = 0.0;

        double pi = Math.PI;

        Scanner sc= new Scanner(System.in);

        r = sc.nextDouble();

        circle_area = pi * r * r;
        circumference = 2 * pi * r;


        System.out.println( circle_area + " " + circumference);
        sc.close();
    }
}