Multiple Choice Questions on The radius of a sphere is 6 cm It is melted and drawn into a wire of radius 0 2 cm The length of the........... for SSC CGL Exam Preparation

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Multiple Choice Questions

The radius of a sphere is 6 cm It is melted and drawn into a wire of radius 0 2 cm The length of the...........

Quantitative Aptitude (CGL) Mensuration 3D
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    The radius of a sphere is 6 cm. It is melted and drawn into a wire of radius 0.2 cm. The length of the wire is

    81 m

    Incorrect Answer

    80 m

    Incorrect Answer

    75 m

    Incorrect Answer

    72 m

    Correct Answer
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    Explanation:

    Volume of sphere = volume of wire.
    (4/3)πr^3s=πr^2wh
    h=(4/3)×π×6^3π0.2×0.2
    h=(4×6×6×6)/(3×0.2×0.2)
    =7200cm=72m.

    By: MIRZA SADDAM HUSSAIN
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