1 cm cube of copper is drawn into 0.2 mm diameter.find the length of the wire.
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volume of cube =volume of cylinder
l³=πr²h
1³=22/7*0.1*0.1*h(we have to find h)
this gives h=31.8cm
please not that dameter is given in mm so change it into cm
l³=πr²h
1³=22/7*0.1*0.1*h(we have to find h)
this gives h=31.8cm
please not that dameter is given in mm so change it into cm
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