Derek wants to construct a square box stall for each horse that is to be housed in a stable. he wants all of the box stalls to have the same length on a side. derek has a total area of 20,250 square feet in which to construct the box stalls. the equation for the side length, x, of a box stall in terms of the number of horses, n, the stable wants to house is x = √. if each box stall is 9 feet long on a side, the stable can house horses.