Well we can find the perimeter by using the formula P=2L + 2W P=2(30) + 2(18) P=60+36 P=96 I believe we can divide the perimeter by 18 to find the total amount of lights needed. 96÷18=5.333333 So we know at least 5 lights are needed. I'm not sure if I'm correct, but I hope this helped anyways :)
