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SSC Sample Paper SSC CHSL (10+2) Sample Test Paper-8

  • question_answer
    The area of a semi - circular field is 308 sq. m; then taking \[\pi =\frac{22}{7}\] the length of the railing to surround it has to be

    A)  88 m                           

    B)  80 m

    C)  44 m                           

    D)  72 m

    Correct Answer: D

    Solution :

     If radius = r metre, then \[\frac{\pi {{r}^{2}}}{2}=308\] \[\Rightarrow \]\[\frac{22}{7}{{r}^{2}}=616\] \[\Rightarrow \]\[{{r}^{2}}=\frac{616\times 7}{22}=196\] \[\Rightarrow \]\[r=\sqrt{196}=14\] metre


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