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10th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-18

  • question_answer
    If the radius of a sphere is increased by 3 cm, its surface area is increased by \[792\,\,c{{m}^{2}}\]. The radius of the sphere, before change is _________.\[\left( use\,\pi =\frac{22}{7} \right)\]

    A)  7 cm                           

    B)  14 cm

    C)  9 cm   

    D)  10 cm

    E)  None of these

    Correct Answer: C

    Solution :

     Not Available               


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