the area of a pool is 12 square units and the area of the walkway around the pool is 60 square units, what is the perimeter of the walkway?
not enough data
all we know is that the total area of pool plus walkway is 72 units^2
so
9x8=72 , perimeter = 34
6x12 = 72 , perimeter = 36
4x18 , perimeter = 44
etc