Friday
September 19, 2014

Homework Help: Surface Area

Posted by COFFEE on Friday, September 14, 2007 at 8:09pm.

[Given]
Fiber Linear Density = 1 denier = 1 g/9000m
Fiber Density = 1.14 g/cm^3

[Find..]
Fiber surface area in cm^2/g
Assume that the fiber strand is a uniform cylinder

[Answer]
Surface area = 3,150 cm^2/g


....... how do i get to the answer? my professor gives us these notes:

Pi*D*L

Pi*D is the diameter of the top of the cylinder when it is cut vertically in half. and L is the height.

((Pi*D^2)/(4)) * L = volume of the cylinder

((Pi*D^2)/(4)) * L * Density = weight

..please help!

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