How Do You Find The Area If You Know The Perimeter?

First you divide the perimeter by 4 then multiply the sides like your trying to get the area.
For example: Perimeter is 60ft around. Divide tht by 4. You get 15. Multiply 15 and 15 and you get 225 for your answer.....

This is ONLY if it is a SQUARE

p=perimeter, n= length of side, a=area

p=4n
a=nxn = n²
a=(p/4)²

so divide by 4 then times that number by itself.

Okay butt then is the first one right to because you both have different ways? But the last one is the easiest! Thank you, you helped a lot !