Pls help me with placing those numbers on the number line.

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

Its d so thats how it would would back from 1.0 form three four two

These are the multiples of 15 but what you are probably asking or what are the factors of 15