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The Brainliest Answer!
2016-02-23T20:38:47+05:30
Area of (APB + CPD) = (22/7) x 10.5 x 10.5 = 346.5 
Area of ( ABCD ) = 21 x 21 =441

Shaded area = 441-346.5
                      = 94.5 cm ^ 2

Answer : 94.5 cm ^ 2

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