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) {
		// TODO ?????????????????????????????????????????????


		Scanner scan = new Scanner(System.in);

		double r = scan.nextDouble();

		scan.close();

		double dbPi = Math.PI;

		//System.out.println("??" + dbPi);

		double outLine = 2 * dbPi * r;
		double area = dbPi * (r * r);
		System.out.printf("%.6f",outLine);

		System.out.printf(" " + "%.6f",area);

	}
}