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  1. A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?
    2. A.
    2 : 1
    B.
    3 : 2
    C.
    25 : 18
    D.
    27 : 20

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    Answer : Option C

    Explanation :


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