Problem 7 If a piece of brass 8 by 6 by 12 in. is drawn out into a wire 1/30 in. in diameter, what will be the length of the wire?

Solution 7

$\frac{1}{4}\pi (\frac{1}{30})^2 L = 8(6)(12)$

$L = 660\,047.38 ~ \text{in.}$

$L = 55\,003.95 ~ \text{ft.}$ answer

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