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.io.*;
public class Main {
	public static void main(String[] args) throws IOException, NumberFormatException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		double r = Double.parseDouble(br.readLine());
		double π = 3.1415926;
		//計算
		double x = π * r * r;//面積
		double y = 2 * π * r;//円周
		String men = String.format("%.5f", x);
		String en = String.format("%.5f", y);
		System.out.println(men + " " + en);
		br.close();
	}
}