Acontainer has 14 yellow chips, 10 blue chips and 12 red chips in it. one chip is randomly chosen from the container, and then a second chip is randomly chosen after replacing the first chip. what is the probability that both chips are red?

The first probability would be 12/36 because there is a total of 36 chips, and twelve are red (the numerator). IF you reduce this fraction to simplest form, then it would be 1/3.

The second probability would also be 1/3, because the red chip was put back so there are still 36 chips to pick from.

Then, the last step is to multiply 1/3 x 1/3 which would give you 1/9.

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