We will solve this question point by point. Let's start with the first part.
m
To calculate the angle value we will use the VU arc information. The angle m
Find: mSolution: 30°
Justification: Inscribed angle
m
This angle corresponds to a right triangle, therefore its measure would be 90°.
Find: mSolution: 90°
Justification: right triangule
PY
PY as you can see in the figure corresponds to the radius of the smallest circle so we can solve this question with the diameter of the circle we already know.
Find: PY
Solution: 22 cm
Justification: radius of the circle