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)

process.stdin.setEncoding('utf-8');
process.stdin.on('data', (input) => {
  var arry = input.split(' ');
  var r = parseInt(arry[0]);
  var pi = Math.PI;
  var result = 2 * pi * r;

  console.log(result);
})