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8th Class Mathematics Cubes and Cube Roots Question Bank Cubes and Cube Roots

  • question_answer
    To collect rain water. Mini made a cubical tank which can hold \[91125\text{ }{{m}^{3}}\]water. She uses this water for watering the plants of her garden. What is the height of the tank?

    A)  50 m              

    B)  25 m  

    C)  45 m  

    D)         40 m  

    Correct Answer: C

    Solution :

    Volume of cubical tank \[\text{= 91125 }{{\text{m}}^{\text{3}}}\] \[{{\text{(Side)}}^{3}}=91125\Rightarrow Side=\sqrt[3]{91125}=45m\] \[\therefore \] Height of tank\[=45\text{ }m\].


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