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 scan = new Scanner(System.in);
double r = scan.nextDouble();
double pai=3.14;
double men =r*r*pai;
double naga= r*2*pai;

System.out.printf("%.8f　%.8f", men, naga);

}
}