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.lang.Math;
import java.util.Scanner;
class Main
{
    public static void main(String args[])
    {
	double r,s,shu;
	Scanner scan=new Scanner(System.in);
	r=scan.nextFloat();
	s=r*r*Math.PI;
	shu=2*r*Math.PI;
	System.out.printf("%f %f\n",s,shu);
    }
}