Question

Please I need help on the first question!!

Answer 1

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

Explanation:

In Prob 6, pls try to calculate and find solution yourself.

Good luck!