Question 377965
The sides of a square must all be equal, so we know that 36 - 5x = 4x. From this, we have x = 4. We can plug x = 4 to either expression (4x or 36-5x) and find that the side length of the square is 16. Since the perimeter of a square is four times one of the side lengths, the perimeter is 4*16, or 64.