Ithink i got the right answer, but tell me if i didn’t! thx!

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

The students in a class were asked how many siblings they have. the data obtained is represented in the dot plot. the number of students who have no siblings is . the number of students who have three or more siblings is .

For the right triangle shown, the lengths of two sides are given. find the third side. leave your answer in simplified, radical form.