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SSC Sample Paper SSC CGL - Sample Paper-17

  • question_answer
    The base of a conical tent is 19.2 m in diameter and its height is 2.8 m. The area (in sq m) of the canvas required to put up such a tent is nearly \[\left( use\,\,\pi =\frac{22}{7} \right)\]

    A) 3017.10            

    B) 3170

    C) 301.71

    D) 30.17

    Correct Answer: C

    Solution :

    Radius of the circular base \[=19.2\div 2=9.6\,m\] \[h=2.8\,m\] \[l=\sqrt{{{h}^{2}}+{{r}^{2}}}=\sqrt{{{(2.8)}^{2}}+{{(9.6)}^{2}}}\] \[=\sqrt{7.84+92.16}=\sqrt{100}=10\,\,m\]        Area of the canvas \[=\pi rl\]             \[=\frac{22}{7}\times 9.6\times 10\]             \[=301.71\,sq\,\,m\]                   


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