Which of the following expressions could be used to represent "the difference between -12 and 10"?

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

Well if you have 20 bats you probably want 20 balls? you don’t have enough context to answer the question.