A solid red ball of radius 7 cm was melted and then drawn into a wire of diameter 0.2 cm. what will be the length of the wire?
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the length of wire is 457.33 m or 45733.33 cm.
neha403:
please u can explain it
volume of ball=volume of wire
4/3πR^3=πr^l
ok
l=4R^3/3r^2
ok
put the value of R=7cm&r=0.1
ok
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