Tetrahedron

Tetrahedron

Postby Spiral » Thu Feb 16, 2012 9:42 pm

Hi everyone!

I'm working on a project which has a tetrahedron shape. As shown in the picture below - I have the amout of a, and need to figure out b. I had a look at google, but didn't find the formula to do that. I am completely lost!!! Does anyone have any idea how to calculate b...?

Many many thanks,
Sarah

Image
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Re: Tetrahedron

Postby Math Tutor » Fri Feb 17, 2012 2:09 am

You have to find the height of the tetrahedron and b is 2/3 of it according to these formulas median formulas.
You have to find the height of sides using Pythagoras' theorem[tex]= \sqrt{a^2 - \frac{a^2}{4} } = \frac{a\sqrt{3} }{2}[/tex]

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Re: Tetrahedron

Postby Math Tutor » Fri Feb 17, 2012 2:10 am

What about the rest?

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Re: Tetrahedron

Postby sajid121 » Wed May 02, 2012 1:58 am

You have to find the height of the tetrahedron and b is 2/3 of it according to these formulas median formulas.

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