1. The payment by installment are done periodically, and in equal amounts. This payment scheme is called
A. Ordinary annuity C. annuity
B. annuity due
D. general annuity

I think the answer is B because Annuity is a fixed sum of money paid each year

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

Where are the