Lysa wants to build a fence around her yard. She needs 160 pieces of wood. She has already purchased 40 pieces. Which equation represents how many more pieces of wood she needs to purchase?

That is so true, i can’t believe how true this is

You have 2 sides that are 2 cms and you have 6 sides that are 1/2 cm and you have 4 sides that are 1 cm. the smallest sides are 1/2 the medium sized sides are 1 and the smallest are 1/2. so to find the perimeter you have to add them all up together so your answer will be 11 cm's