What is the area in square centimeters of the shaded region to the

1.
What is the area in square centimeters of
the shaded region to the nearest tenth?
2. Find the value of y.
3. Find y to the nearest hundredth.
4.
What is the measure of arc XY in degrees?
5. Find the area of sector JOE. Round your
answer to the nearest tenth.
6. Find chord JK to the nearest tenth.
7. What is the area of the shaded segment?
Round your answer to the nearest tenth.
8. Which is the measure of the central
angle?
9. Circles C and C' with radii r and R are
centered at the origin. C' is a dilation
of C. What is the scale factor? What
conclusion can be drawn about the circumference and the area from the fact
that C' is a dilation of C?