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 C# (judge verdict: Wrong Answer)

using System;

public class Test
{
	public static void Main()
	{
		// your code goes here
		string line = System.Console.ReadLine();
		string[] ab = line.Split(' ');
		decimal r = Convert.ToDecimal(ab[0]);
		decimal pi = 3.14159265m;
		decimal s = pi*r*r;
		decimal l = 2*pi*r;
		Console.WriteLine("{0:F5} {0:F5}",s,l);
		
	}
}