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SSC Sample Paper SSC CHSL (10+2) Sample Test Paper-6

  • question_answer
    If the length of the diagonal of a cube is \[8\sqrt{3}\] cm. then its surface area is

    A)  192cm2                        

    B)  512cm2

    C)  768 cm2           

    D)         384 cm2

    Correct Answer: D

    Solution :

     If the length of the edge of cube be \[x\] cm, then diagonal \[=\sqrt{3x}\] cm \[\therefore \]\[\sqrt{3x}=8\sqrt{3}\Rightarrow x=8\]cm \[\therefore \] Surface area of the cube \[=6{{x}^{2}}=6\times 8\times 8\] = 384 sq. cm


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