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  1. The edge of three cubes of metal is 3 dm, 4 dm and 5 dm. They are melted and formed into a single cube. Find the edge of the new cube?
    2. A.
    3 dm
    B.
    4 dm
    C.
    5 dm
    D.
    6 dm

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    Answer : Option D

    Explanation :

    33 + 43 + 53 = a3 => a = 6

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