the diameter of a sphere is 42cm. it is melted and drawn into a cylindrical wire of diameter 2.8cm Find the length of the wire
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Answer:
given radius 3cm Now; Volume is V=
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Answer:
6300cm or 63m
Step-by-step explanation:
Radius of sphere= 21cm
Radius of cylinder= 1.4cm
volume of sphere= 4/3πr^3
= 4/3×π×21×21×21
= 12348π cm^3
therefore, volume of sphere= volume of cylinder
volume of cylinder=38808cm^3
πr^2l=12348π cm^3
r^2l=12348 cm^3
l= 12348÷1.96 cm
l= 6300cm or 63m
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