Subject :IMO Class : Class 4
Subject :IMO Class : Class 4
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Subject :IMO Class : Class 7
Ans 4:
Class : Class 8
the correct answer is B.
there are two small semicircles that form one circle when joined. so after joining it forms 1 circle with a diameter of 14 which means it has a radius of 7.
area= 7*7*(22/7)= 154
in the big semicircle it has a diameter of 28 which means it has a radius of 14.
area = (14*14*22)/(7*2) = 616
area of shaded part = 616-154= 462
thus the correct option is B
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Subject :IMO Class : Class 6
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Subject :IMO Class : Class 4
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Subject :IMO Class : Class 3
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Subject :IMO Class : Class 3
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Subject :IMO Class : Class 4
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Subject :IMO Class : Class 6
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Subject :IMO Class : Class 6