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9th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-14

  • question_answer
    The diameter of a copper sphere is 6 cm. The sphere is melted and is drawn into a long wire of uniform circular cross-section. If the length of the wire is 36 cm, find its radius. \[(Take\,\pi =3.14)\]

    A)  4 cm                           

    B)  3 cm

    C)  2 cm                           

    D)  1 cm

    E)  None of these

    Correct Answer: D

    Solution :

     Not Available


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