The employee parking lot has an area of 378 square yards. the parking lot is 9 yards wide. what is the perimeter of the employee parking lot?

Here you know the are of the square yard which is 378 and you also know the wide(9) but you DONT know the length.
here how you find the lenght

378 = 9x
x = 378/9
x=42

since now we know the lenght 

we can find the perimeter of the employee parking lot

A square has four sides right?

so to find the perimeter you just add up the four sides

9+9+42+42 =102

Hope this helped.

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