find the area enclosed by two concentric circle of 4cm and 3cm
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area enclosed by two concentric circles is equal to are enclosed by the larger circle that is, the circle having radius 4cm
now,
area enclosed by larger circle is
22/7 *4*4
352/7
50.28cm square
now,
area enclosed by larger circle is
22/7 *4*4
352/7
50.28cm square
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