In a survey of 130 randomly selected students at a school, 30% of them said that math was their favorite subject. If there are 850 students in the school, how many students would choose math as their favorite subject?

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