a rectangular field has an area of 1764 m^2. the width of the field is 13m more than the length. what is the perimeter of the field?
(a) 121m
(b) 144m
(c) 168m
(d) 170m
x^2 + 13x = 1764 so x = -49 and 36, we take 36 as its the positive value. And the other side is 49. Now use 2(l+b) to find perimeter. You get (36+49)*2 = 170
