A solid metallic sphere of radius 3.5 cm is melted and a wire of diameter 0:6 cm is drawn from it.Find the length of wire.
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Answer:
first : you have to find the area of sphere
second : Area will be 154cm2(4*22/7*3.3*3.5)
third: put it equal to the area of cylinder which is 2pie r h+r
fourth: so the length of wire wil be 76.06cm
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