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SSC Sample Paper SSC CHSL (10+2) Sample Test Paper-1

  • question_answer
    A sphere and a hemisphere have the same radius. Then the ratio of their respective total surface areas is

    A) \[2:1\]                           

    B) \[1:2\]

    C) \[4:3\]                 

    D)        \[3:4\]

    Correct Answer: C

    Solution :

     Radius of sphere \[=r\] units \[\therefore \]\[\frac{\text{Surface}\,\,\text{area}\,\,\text{of}\,\,\text{sphere}}{\text{Surface}\,\,\text{area}\,\,\text{of}\,\,\text{hemisphere}}\] \[=\frac{4\pi {{r}^{2}}}{3\pi {{r}^{2}}}=\frac{4}{3}\]


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