The perimeter of a square is directly proportional to the length of its sides. a. write an equation to represent this direct variation. make sure to define your variables. b. in complete sentences, use a specific example to justify your equation from part a. include a drawing in your answer.

Do i need a pic of a square to answer this

A. p = nl, where p is the 'permiter', n is the number of sides, and l is the length of one side. this equation holds true for any equilateral object.  b. since the sides of a square are all equal and there are four sides to a square, one can easily see that the perimeter is 4l for example a 5 meter square would have a perimeter of 4x5, or 20 meters.