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SSC Sample Paper Mock Test-12 SSC CGL Tear-II Paper-1

  • question_answer
    The inner circumference of a circular park is 440 m. The track is 14 m wide. The diameter of the outer circle of the track is

    A) 168 m

    B)  169 m  

    C)  144 m

    D)  108 m

    Correct Answer: A

    Solution :

    Inner circumference  \[=2\,\,\pi \,\,r=440\,\,\text{m}\] \[\Rightarrow \]\[r=\frac{440}{2\times 22}\times 7=70\,\,\text{m}\] Width of track = 14 m \[\therefore \] Radius of outer circle \[=(70+14)\text{m}=84\,\,\text{m}\] \[\therefore \] Diameter of outer circle \[=2\times 84=168\,\,\text{m}\]


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