Computation - Circle

Time Limit : 1 sec, Memory Limit : 65536 KB
Japanese version is here

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