the side of a metallic cube is 6 cm and is melted. From molten material a wire of uniform circular cross section is drawn if the diameter of wire is kept 1 milli metre how long wire can be drawn
plz help I will mark u brainiest
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the side of a metallic cube is 6 cm and is melted. From molten material a wire of uniform circular cross section is drawn if the diameter of wire is kept 1 milli metre how long wire can be drawn
plz help I will mark u brainiest
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volume of cube = volume of cylindrical wire
(6)³ = πr²h
216 = 22/7×5/10000×h
h = 216×10000×7/22×5
h = 15120000/110
h = 1512000/11 = 137454.5
Answer:
The wire is in the shape of a cylinder.
Since the sphere is melted and a cylindrical wire is formed, their volumes are equal.
Volume of a sphere =
3
4
πr
3
As the diameter of the sphere is 6 cm, its radius r=3 cm
Volume of a Cylinder =πR
2
h
Length of the wire h=36m=3600cm
Hence, Volume of sphere = Volume of the wire
=0.1cm
Hence, radius of the cross-section of the wire =0.1cm