Answer :

We know that each interior angle of an equilateral triangle is of measure 60°

Area of sector  = r2


=  x  x 6 x 6


= cm2


Area of triangle OAB =  x (12)2

= 36 cm2


Area of circle = πr2


=  × 6 × 6


= cm2


Area of shaded region = Area of ΔOAB + Area of circle - Area of sector 


= -


= (36 + ) cm2

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