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 JavaScript (judge verdict: Wrong Answer)

var input = function()
{
  return input= require('fs').readFileSync('/dev/stdin', 'utf8').split('').map(Number);
};

var out = function(x)
{
  console.log(x);
  return x;
}

var surface =function(x)
{
  return Math.pow(x[0],2) * Math.PI;
}

var length = function(x)
{
  return 2*x[0]*Math.PI;
}

var calc = function(x)
{
  var str = surface(x) +" " +  length(x);
  out(str);
  return str;
};

calc(input());