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9th Class Mathematics Surface Areas and Volumes Question Bank Surface Areas and Volumes

  • question_answer
    What is the length of the longest pole that can be put in a room of dimensions\[10\,m\times 10\,m\times 5\,m?\]

    A)  15 m  

    B)  16 m  

    C)    10 m  

    D)    12 m              

    Correct Answer: A

    Solution :

    Dimensions of a room \[=1\,0\,m\times 10\,m\times 5\,m\] Length of the diagonal \[=\sqrt{{{(10)}^{2}}+{{(10)}^{2}}+{{(5)}^{2}}}=15\,m\] \[\therefore \]The length of the longest pole that can be put in a room = 15 cm


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