Suppose that y varies directly with x and inversely with z; y = 27 when x = 21, and z = 7. Write the equation that models the relationship. Then
find y when x = 25 and z = = 5.

56 ur welcome:

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