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  5. Area, Perimeter and Volume

5th Class Mathematics Area, Perimeter and Volume Question Bank Area and Perimeter

  • question_answer
    The difference between the length and the breadth of a rectangle is 8 cm and the perimeter is 64 cm. Which of the following can be the length and breadth of this rectangle?

    A) L = 12 cm, B = 4 cm             

    B) L = 20 cm, B = 8 cm

    C) L = 20 cm, B = 12 cm    

    D) L = 12 cm, B = 8 cm

    Correct Answer: C

    Solution :

    Length of rectangle = x cm Breadth of rectangle = (x - 8) cm Perimeter of rectangle = 2(x + x - 8) = 2(2x - 8) Given 2(2x - 8) = 64 \[\Rightarrow \]  2x = 40  \[\Rightarrow \]  x = 20 L = 20, B = 20 - 8 = 12       


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