I learned about squaring and square roots this year. That means that is you square a square area, you can find the length of one of the sides. Or all of them because they are all the same. A way to use this in real life is for example if you are carpeting a perfectly square room. You know the square area of the carpet because the salesman told you, but you have no idea of the length of the sides. You can simply square the area of the carpet to find the length. So if the area was 144 square feet, it would be 12 feet along the walls.