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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-27

  • question_answer
    A circular grassy plot of land, 42 m in diameter, has a path 3.5 m wide around it on the outside, the cost of gravelling the path at Rs. 6 per sq m is

    A)  Rs. 3003          

    B)  Rs. 4004

    C)  Rs. 5005          

    D)  Rs. 6006

    Correct Answer: A

    Solution :

    Area required\[=\pi [{{(21+3.5)}^{2}}-{{(21)}^{2}}]\] \[=500.5\] Cost of gravelling \[=500.5\times 6=\,\,Rs.\,\,3003\]


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