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

  • question_answer
    The diameter and slant height of a conical tomb are 28 m and 50 m respectively. The cost of white washing its curved surface at the rate of 80 paise per square metre is

    A) Rs. 2640                       

    B)  Rs.1760

    C)  Rs. 264            

    D)  Rs. 176

    Correct Answer: B

    Solution :

    Curved surface of tomb \[=\pi rl=\frac{22}{7}\times 14\times 50=2200\,\,{{m}^{2}}\] \[\therefore \]Cost of white washing \[=2200\times 0.80\] = Rs. 1760


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