If b varies inversely as h and b=8, when h=5, find b when h =4

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).

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

Prove the following(cot0+cosec0)[tex](cot0 + cosec0) { }^{2} = \frac{1 + cos0}{1 - cos0} [/tex]