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  5. Area, Perimeter and Volume

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

  • question_answer
    The cost of ploughing a field at Rs. 9 per square metre is Rs. 1872. If the breadth of the field is 13 m, then its length is ____.

    A)  8 m                             

    B)  16 m

    C)  39 m                           

    D)  3 m

    Correct Answer: B

    Solution :

      Total cost  \[=Rs.\,1872\] Cost of ploughing \[1\,\,sq.\,\,\,\,\,m=Rs.\,9\] \[\therefore \] Area of field \[=1872-9=208\text{ }sq.\text{ }m\] \[\Rightarrow \]Length \[\times \] Breadth \[=208\text{ }sq.\text{ }m\] \[\Rightarrow \]Length \[\times 13\text{ }m=208\text{ }sq.\text{ }m\] \[\Rightarrow \]Length \[=208\div 13=16\text{ }m\]


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