On a map, elm wood drive passes through r(4,-11) and s(0,-9) and taylor road passes through j(6,-2) and k(4,-5). if they are straight lines are the two streets perpendicular?

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