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Answer

Area of circle = 22/7 x 7 x 7 = 22 x 7
Area of shaded area = 2/7 x Area of circle = 2/7 x (22 x 7) = 44
Area of unshaded portion of triangle DAC = 94 - 44 = 50 cm2.

NOTES:
Often the fractions will cancel out. That's why I did not expand 22 x 7.
Because later we will multiple by 2/7.


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