Mr .herman subscribes to a monthly architecture magazine. it costs him$72 for an 18 month subscription

The question is way too vague. Try asking a question instead of the context to get a more accurate answer

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