The relationship between the elapsed time, t. in years, since Akiba started studying his tree, and the total
number of its branches, N(t), is modeled by the following function:

Iam thinking the answer is a.) knew

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