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SSC Sample Paper Mock Test-5 SSC CGL Tear-II Paper-1

  • question_answer
    If a solid sphere of radius 10 cm is moulded into 8 spherical solid balls of equal radius, then the surface area of each ball is

    A)  \[100\,\pi \] sq cm                     

    B)  \[60\,\pi \]sq cm

    C)  \[70\,\pi \]sq cm                        

    D)  \[50\,\pi \]sq cm

    Correct Answer: D

    Solution :

    Surface area of each ball \[=\frac{4\pi \times 10\times 10}{8}=50\pi \] = 50 sq cm


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