What is the
coefficient of the second term in the expansion of the binomial (4x + 3y)3

The answer to this would be 9, you distribute the 3y to the 3

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