Which ordered pair would form a proportional relationship with the point graphed below?

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).

4+(2+x) can you me solve this problem

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).