Answers

2015-09-26T23:01:50+08:00

to find the weight, you'll have the formula:

W = Unit weight × Volume

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Since unit weight is given as 550lb/ft³ then we'll need to find the volume in cubic feet.

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Volume = πr²h

V =  \pi (0.125~in)^2( \frac{1ft}{12~in})^2(2mi)(  \frac{1,609m}{1mi})( \frac{3.28ft}{1m}) \\ V=1.167ft^3 \\ ---------------  \\ W = Unit Wt(Volume)  \\ W = 550 \frac{lb}{ft^3}(1.167ft^3) \\ W = 641.85lb

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