330 cu cm of metal is drawn into a wire of diameter 2 mm. find the length of wire
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Radius of wire = diameter /2
=2mm/2
=1mm
Volume of wire =Volume of metal
=πr²h=330cm³
=(22/7)×(1mm)²×h=330cm³
330cm³×7
=h= -------------------
22×1mm²
330cm³×7
=h= -----------------------
22×(1/100)cm²
330cm³×7×100
=h= ---------------------------
22×1cm²
=h=10500cm
Thus length of wire is 10500cm or 105m
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