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

  • question_answer
    The external length, breadth and height of a closed rectangular wooder box are 20 cm, 16 cm and 8 cm respectively. The weight of the box, when is empty, is 13 kg and when it is filled with sand, is 72 kg. If it is given that thickness of the wood is - cm, then the weights of one cubic cm of wood and cubic cm of sand are respectively ________

    A)  \[\frac{13}{265}kg\text{ and }\frac{59}{995}kg\]                                   

    B)  \[\frac{13}{565}kg\text{ and }\frac{59}{1995}kg\]

    C)  \[\frac{13}{365}kg\text{ and }\frac{419}{1495}kg\]                                

    D)  \[\frac{13}{1565}kg\text{ and }\frac{72}{1995}kg\]

    E)  None of these

    Correct Answer: B


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