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) {
	Scanner sc = new Scanner(System.in);
	double x= sc.nextDouble();
	double pi=Math.PI;
	double a=2*pi*x;
	double b=pi*x*x;
	System.out.printf("%f %f\n",a,b);
	sc.close();
}
}