Question

if you know the area of a square.. how do you find out the length of one side, formula to use?

Answer 1

A square has equal sides. If you know the length of one side just multiply the length x4 and you'll get your answer.
For example: If I had a square. One side of the length is 6cm, so I have to multiply 6x4 which is 24cm. My perimeter is 24cm. 

Hope that helped:D

Answer 2

Area can be found by using the formula A=lw. Just plug in the area for A and subfe you don't know l or w substitute then with x. Your new formula becomes Area= x times x which equals Area= x^2. Your formula is Area equals X to the second power. Hope that helps!!!