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){
	//	System.out.println("???????????\?????????????????????");

		//??°?????\???
		Scanner sc = new Scanner(System.in);
		String a1 = sc.next();

		//???????????°???
		double a = Double.parseDouble(a1);

		double pi = Math.PI;

		//????????¢???
		double area = a*a*pi;

		System.out.println(area);


		//?????¨?????????
		double circumference = 2*a*pi;
		System.out.println(circumference);

	}

}