Multiple Choice Questions on A copper sphere of diameter 12 cm is drawn into a wire of diameter 8 mm Find the length of the wire ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

A copper sphere of diameter 12 cm is drawn into a wire of diameter 8 mm Find the length of the wire ........

Quantitative Aptitude ( CCS) Mensuration 3D
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    A copper sphere of diameter 12 cm is drawn into a wire of diameter 8 mm. Find the length of the wire.

    1400 cm

    Incorrect Answer

    1800 cm

    Correct Answer

    1500 cm

    Incorrect Answer

    none of these

    Incorrect Answer
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    Explanation:

    Here 4/3 πR3 = πr2h 
    where R is the radius of sphere, 
    r is the radius of the wire and h is the length of the wire.
    Hence 4/3 (12/2)3 = (.8/2)2 h
    So h =1800cm.

    By: MIRZA SADDAM HUSSAIN
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