A square of side 3 cm is cut out from a circle of radius 2.12 cm . Find the area of the remaining part?
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Answer:
area of the square is 3^2sqcm=9sqcm
area of the circle is π.2.12 ^2sq cm
=22×2.12×2.12/7 sq cm
=14.125sq cm
area of the remaining part is
(14.125-9)sq cm
=5.125 sq cm
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