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6th Class Mathematics Mensuration Question Bank Menstruation

  • question_answer
    Observe the figure carefully and answer the question. In the given figure, O and P are the centres of two equal three-quarter circles. The length of OP is 14 cm. The perimeter of the figure is \[\left( \text{use}\,=\pi =\frac{22}{7} \right)\]  

    A)  50                  

    B)    94

    C)  49                  

    D)    95

    Correct Answer: B

    Solution :

         Required perimeter = circumferences of both the circles + radii of both the circles. \[=2\left[ 2\pi r-\frac{2\pi r}{4} \right]+(7\times 4)\] \[=2\left[ \frac{6\pi r}{4} \right]+28=3\pi r+28\] where r = 7 \[=3\times \frac{22}{7}\,\times 7+28=66+28=94\]


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