4th Class Mathematics Area, Perimeter and Volume Question Bank Perimeter & Area

  • question_answer The figure is made of identical rectangles. What is its perimeter?

    A)               35 cm            

    B)    40 cm

    C)  45 cm            

    D)    50 cm

    Correct Answer: C

    Solution :

    Length of each identical rectangle \[=\frac{12.\text{5 cm}}{5}=2.\text{5 cm}\] \[\therefore \] Perimeter of the given figure \[=(\text{5}\times \text{2}.\text{5}+\text{12}.\text{5}+\text{1}0\text{ }\times \text{ 2})\text{ cm}\] \[=(\text{12}.\text{5}+\text{12}.\text{5}+\text{2}0)\text{ cm}=\text{45 cm}\]


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