Answer
$\approx$ 6.8005
Work Step by Step
Since the problem tells you that the panel is going to be square, that means you should use the square formula (area = length x width) it also tells us that the area is 185 sq ft. So that means that 185 =length x width. Now since it’s a square all sides are equal so you can just do the square root of 185 which equals 13.601 and to get that so it’s accounting for all 4 sides divide it by 2 and you get your answer of $\approx$ 6.8005