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OutCell · Mar 4, 2008, 02:00 PM

Hi,

This is just a portion of my project. I am supposed to get the total mass of a roll cage tube in order to estimate the total cost. I have 3 different tubes, circular, square and hexagonal.

The circular tube volume is:
V=(do^2-din^2) x Pi/4 x L (for hollow tube)
V=d^2 x Pi/4 x L (for solid tube)

My question is, how do I get the volume for square and hexagonal tubes? :)

galactus · Mar 4, 2008, 06:18 PM

The area of a hexagon is given by $\frac{3\sqrt{3}}{2}s^{2}$ , where s is the length of a side.

Find the area of your hexagon and multiply by the length of the tube.

Same for the square one. Find the area of the square and multiply by the length of the tube.

OutCell · Mar 5, 2008, 02:56 AM

Originally Posted by galactus

The area of a hexagon is given by $\frac{3\sqrt{3}}{2}s^{2}$ , where s is the length of a side.

Find the area of your hexagon and multiply by the length of the tube.

Same for the square one. Find the area of the square and multiply by the length of the tube.

Thanks galactus. I really appreciate your time and help