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

  • question_answer
    If a solid sphere of radius 10 cm is melted to stretch into a wire of 1000 cm, then  curved surface area of the wire is ________

    A)  \[7005\,c{{m}^{2}}\]                                                 

    B)  \[7266.72\,c{{m}^{2}}\]

    C)  \[3268.66c{{m}^{2}}\]                                               

    D)  \[8645.55c{{m}^{2}}\]

    E)  None of these

    Correct Answer: B


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