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SSC Sample Paper SSC CGL - Sample Paper-20

  • question_answer
    Diameter of a wheel is 3 m. The wheal revolves 28 times in a minute. To cover 5.280 cm distance, the wheel will take \[\left( \text{Take}\,\,\pi =\frac{22}{7} \right)\].

    A) 10 min             

    B) 20 min

    C) 30 min             

    D) 40 min

    Correct Answer: B

    Solution :

    Diameter of wheel \[=3\,m\] \[\therefore \] Circumference \[=\pi d\]             \[=\frac{22}{7}\times 3=\frac{66}{7}\,cm\] \[\therefore \] Number of revolutions             \[=\frac{5280}{66}\times 7=560\] \[\because \] 28 revolutions took in 1 min. \[\therefore \] Time taken\[=\frac{560}{28}=20\,\min \]


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