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  1. The areas of the two spheres are in the ratio 1: 4. The ratio of their volume is?
    2. A.
    1:4
    B.
    1:16
    C.
    1:8
    D.
    1:64

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    Answer : Option C

    Explanation :

    4Ï€r12 : 4Ï€r22 = 1 : 4

    r1 : r2 = 1 : 2

    4/3 Ï€r13 : 4/3 Ï€r23

    r13 : r23 = 1 : 8

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