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A copper wire of length 36 m and diam...

A copper wire of length 36 m and diameter 2 mm is melted to form a sphere. The radius of the sphere (in cm) is (a) 2.5          (b) 3        (c) 3.5        (d) 4

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  • A cylinder of height 4 cm and base radius 3 cm is melted to form a sphere. The radius of sphere is:

    A
    3 cm
    B
    `3.5` cm
    C
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    D
    36m

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    A
    4.2 cm
    B
    2.1 cm
    C
    2.4 cm
    D
    1.6 cm

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