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Questions  >>  Olympiad-Math  >>  Class 10
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Q)

A cylindrical jar of radius $6\; cm$ contain oil. Iron spheres each of radius $1.5\; cm$ are immersed in the oil. How many spheres are necessary to raise the level of the oil two centimeters ?

$(A) \; 20 \\(B)\;8 \\(C)\;16 \\(D)\;15 $

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