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9th Class Mathematics Surface Areas and Volumes Question Bank Surface Areas and Volumes

  • question_answer
    If each edge of a cube of surface area S is doubled, what is the surface area of the new cube?

    A)  2S                              

    B)    4S                  

    C)    6S                              

    D)    8S                  

    Correct Answer: B

    Solution :

    Surface area of a cube = S Edge of a new cube \[=2a\] \[\therefore \]Surface area of new cube \[=6{{a}^{2}}=4S\]


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