SSC Sample Paper Mock Test-11 SSC CGL Tear-II Paper-1

  • question_answer
    The diameter of a right circular cone is 12 m and the slant height is 10 m. The total surface area of cone is

    A)  \[\frac{2412}{7}\,\,{{\text{m}}^{2}}\]

    B)  \[\frac{2312}{7}\,\,{{\text{m}}^{2}}\]

    C)  \[\frac{2112}{7}\,\,{{\text{m}}^{2}}\]

    D)  \[\frac{2012}{7}\,\,{{\text{m}}^{2}}\]

    Correct Answer: C

    Solution :

    Total surface area     \[=\pi r\,\,(l+r)=\frac{22}{7}\times 6\times (10+6)=\frac{2112}{7}{{\text{m}}^{2}}\]


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