A piece of iron is in the shape of a right circular cylinder whose diameter is 1.5 and length 3.5 .find the volume of piece.this piece on being melted is made in the form of a bar,whose base is a square of 5cm side. find the length of the bar.
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volume of the piece = 3.5×π (1.5/2)^2= 6.1875
length of the bar = 6.1875/(5×5) = 0.2475
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