The diagram is a circle with centre O. Find the area of t...
The diagram is a circle with centre O. Find the area of the shaded portion
A.
9(π−2)cm2
B.
18πcm2
C.
9πcm2
D.
36πcm2
Correct answer is A
Area of the quadrant = 14πr2=14π(6)2
= 36π4=9π
Area of the triangle = 12×6=18×sin90o=18
Area of shaded portion =(9 π - 18)cm^2\) =
9(π−2)cm2.