Answer:
5. As formula I gave in previous prob.
Area of sector = pi*r^2*angle/360
=> angle = (area*360/(pi*r^2) = (24*pi*360)/(pi*12^2) = 60 deg
6. Area of shade region = Area of sector - Area of triangle AOB
= pi*6^2*90/360 - 6x6/2 = ~10.27
Step-by-step explanation:
In Prob 6, pls try to calculate and find solution yourself.
Good luck!
