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5th Class Mathematics Mensuration Question Bank Mensuration

  • question_answer
    The total cost of flooring a room at Rs. 8.50 per Square meter is Rs. 510. If the length of the room is 8 meters, find its breadth

    A)  7.5 m                          

    B)  8.5 m          

    C)  6.5 m                          

    D)  9.5 m

    Correct Answer: A

    Solution :

     Breadth be\[b\] Then Area\[=8b\,\,{{m}^{2}}\] & Cost\[=Rs.\,\,510\] \[\therefore \]Area\[=\frac{5100}{85}=60\,\,{{m}^{2}}\] \[=8\times b=60\,\,{{m}^{2}}\] \[\therefore \]\[b=\frac{60}{8}=\frac{15}{2}m=7.5\,\,m\]


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