The ratio of areas of square and circle is given n : 1 where n is a natural number. If the ratio of side of square and radius of circle is k :1, where k is a natural number, then n will be multiple of
A
77
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B
22
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C
154
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D
Data insufficient
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Solution
The correct option is C154 Let a be the side of the square & r be the radius of the circle, then a2πr2=n Now, ar=k k=ar=√22×n7,n has to be multiple of 22×7=154.