If it's a square it means there's as many rows as columns of soldiers. Find the square root of the question. For 7, if there are 25 men left over, means there's 25 men that don't fit the square of soldiers. Remove from the total number then square it. For 8, perimeter means all 4 sides of the square. Area is found by multiplying 2 sides. So if you square root it, you get the length of 1 side. For 9, it's kinda the same as 7 but just that he has fewer plants, not extra like in number 7
