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

  • question_answer 39) Find the perimeter of a rectangular field if its length is three times its breadth.

    A)  302 m            

    B)    3200 cm        

    C)  408 m            

    D)    320 m

    Correct Answer: D

    Solution :

    Breadth of the rectangle = 40 cm \[\text{Length}=\text{3}\times \text{breadth}=(\text{3}\times \text{4}0)\text{ m}=\text{12}0\text{ m}\] \[\therefore \] Area \[=(\text{12}0\times \text{4}0)\text{ }{{\text{m}}^{\text{2}}}=\text{48}00\text{ }{{\text{m}}^{\text{2}}}\]

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