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A sphere of diameter 6.0cm is moulded into a thin uniform wire of diameter 0.2mm. Calculate the length of the wire in metres. ( Take π=22/7)
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Aug 26, 2021
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Physics Form 1
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anonymous
A sphere of diameter 6.0cm is moulded into a thin uniform wire of diameter 0.2mm. Calculate the length of the wire in metres. ( Take π=22/7)
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Aug 26, 2021
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anonymous
volume of sphere=4/3πr3 =4/3x22/7 x3x3x3.
Volume of wire=πr2l=22/7x0.01x0.01 xl
Volume of sphere =volume of wire.
L=3x3x3x3/3x0.01x0.01 =3600m
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