When the side of a certain square is increased by 2 inches, the area of the resulting square is 64 sq. inches greater than the original square. What is the length of the side of the original square, in inches?

If the area of a square is 25 inches squared, what is the perimeter?

The area of square R is 12 times the area of square T. If the area of square R is 48, what is the length of one side of square T?