A sector of a circle of radius 9cm subtends angle 120^\circ at the centre of the circle. Find the area of the sector to the nearest cm\(^2\) [Take \pi = 22/7]
A
75cm2
B
84cm2
C
85cm2
D
86cm2
E
95cm2
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
Area of a sector = \theta/360 x \pir\(^2\)
= 120/360 x 22/7 x 81/1
= 84.86 cm\(^2\)
\(\approxeq\) 85cm\(^2\) (to the nearest cm)
Source: Myschool Past Questions Archive (Record #23200)