Zoe bought 11 chicken wings for $20.90. What's the unit cost of one wing?

Can someone me and plz do the problem

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).

In the diagram of circle o, what is the measure of zabc?