Find the area of the shaded sector of the circle. Use pi=3.14

Round to the nearest hundreth. You don't need to include units.
Blank 1:

What is the value of r of the geometric series?

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

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).