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Discussion :: Mensuration

  1. The ratio of the volumes of two cubes is 729 : 1331. What is the ratio of their total surface areas?
    2. A.
    81 : 121
    B.
    9 : 11
    C.
    729 : 1331
    D.
    27 : 121
    E.
    None of these

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    Answer : Option A

    Explanation :

    Ratio of the sides = ³√729 : ³√1331 = 9 : 11

     Ratio of surface areas = 92 : 112 = 81 : 121

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