Can you clarify or add a picture?
128 degrees I hope this helped you
I don't know this. Sorry. Good luck
Answer:
451.5
Step-by-step explanation:
I'm rusted on the mathematics
First find the area of the circle using A=pi*r^2
pi*36
Then divide this by 4 because the shaded region is 1/4 of the circle
(36*pi)/4=9*pi
Final answer: B