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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

The diagram is a circle with centre O. Find the area of the shaded portion

A.

9(π2)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(π2)cm2.