Problems
Equilateral triangle
Equilateral triangle
Find the perimeter and the area of equilateral triangle.
Input
One integer - the length n (1 ≤ n ≤ 1000) of the side of equilateral triangle.
Output
Print in one line the perimeter and the area of a equilateral triangle with 4 decimal digits.
Input example #1
3
Output example #1
9.0000 3.8971
Input example #2
8
Output example #2
24.0000 27.7128