A copper rod of radius 2cm. And length 7 cm. Is drawn into a wire of length 112cm of uniform thickness. The thickness of the wire is
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volume of copper rod =volume of wire copper rod is in the form of cylinder of radius 2cm and lenght = height =7cm volume of copper rod =pi r^2h that is =28pi cm^3 volume of wire= pir^2h=pir^2 112 that is 28pi=pir^2 112 r^2=28/112 r=0.5
thinkness of wire means diameter that is =2r
=1cm
thinkness of wire means diameter that is =2r
=1cm
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a copper rod of radius 2cm. and length 7cm is drawn into a wire of length 112cm of uniform thickness. the thickness of the wire is
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