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Area of whole circle = pi * r * r
= (22 / 7) * 7 * 7
= 154 cm²

Area of shaded quadrant = (2/7) * 154 = 44 cm²

Unshaded area of triangle DAC = 94 – 44 = 50 cm² #

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Square with 2 semi circles?  I only see a circle with a triangle. 

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