FIND AREA OF SHADED PORTION
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Answer:
area of square=441
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there are a total of 4 sectors so it is a circle.
radius r=21/2
ar(circle=22/7*21/2*21/2)
=693cm2
ar(square=21*21)
=441cm2
ar(circle)-ar(square)
=693-441
=252cm2
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