Henry has a new album for his baseball cards. he uses pages that hold 6 cards and pages that hold 3 cards. if henry has 36 cards, how may different ways can he put them in his album?

7 ways! He can do:
6 of 6
3 of 3
2 of 3 and 5 of 6
4 of 3 and 4 of 6
6 of 3 and 3 of 6
8 of 3 and 2 of 6
10 of 3 and 1 of 6

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