Intr-un bloc de locuinte sunt 20 de apartamente cu 2 sau cu 4 camere, in tal 64 camere. cate apartamente au 2 camere si cate apartamente au 4 camere?

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

Multiply 9 and 67. then multiply 3 with 67. lastly the answer that you got for 9x67 is to be subtracted by the answer you got for 3x67