8th Class Mathematics Mensuration Question Bank Mensuration

  • question_answer
    Each side of a cube is increased by 50%. Then the surface area of the cube is increased by

    A)  \[12c{{m}^{2}}\]              

    B)  \[{{P}^{2}}%\]

    C)  \[28\pi sq.units\]            

    D)  \[88sq.units\]

    Correct Answer: C

    Solution :

    Let each side be 1.5\[l\] (after increase). Then, % increase in surface area \[2\pi r\]          


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