A rectangle can be defined by two factors: height and width. 2 Its area is defined as the multiplication of the two: height * width. Its perimeter is the sum of its four edges: height + height + width + width. It is possible to create rectangles of the same area but different perimeters. For example, given an area of 45, the possible heights, widths and resultant perimeters would be: (1, 45) = 92 (9, 5) = 28 (15, 3) = 36 Note that (6, 7.5) has an area of 45 too, but is discarded in this kata because its width is non integral. The task is to write a function that, given an area as a positive integer, returns the smallest perimeter possible of a rectangle with integral side lengths. Input range: 1 <= area <= 5 x 10 ^ 10