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New Member
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Oct 26, 2008, 11:04 AM
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How do you find the sa/v of a 5 tetrahedron
I'm in 8th grade and my geo teacher gave this as a assigment what I'm doing is making it out of 2 by 6 pieces of paper if any one can help me please do this is so *censored* evil :confused::confused::confused::confused: ty if you can
<><don't fear the reaper we all die eventually><>
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New Member
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Oct 26, 2008, 11:05 AM
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*takes out a chewy bar and eats it while waiting*
<><don't fear the reaper we all die eventually><>
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Ultra Member
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Oct 26, 2008, 11:07 AM
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Well, the surface area of a tetrahedron is 4*(area of each side).
Since a tetrahedron is made of 4 triangles, 4*(1/2*base*height)
The volume is simply (1/3)*(area of base)*(height)
As far as making a tetrahedron
http://www.mathsisfun.com/geometry/i...dron-model.gif
Not sure what you mean about "5 tetrahedron"
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New Member
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Oct 26, 2008, 11:07 AM
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*takes out anthor chewy bar and eats that one*
<><don't fear the reaper we all die eventually><>
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New Member
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Oct 26, 2008, 11:08 AM
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What I mean bye 5 tetrahedron is show as my image 5 interlocking triangles
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New Member
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Oct 26, 2008, 11:09 AM
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*picks up trash from chewy bars and takes out anthor one*
<><don't fear the reaper we all die eventually><>
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New Member
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Oct 26, 2008, 11:11 AM
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*eats last of chewy bars then goes and orders a cheese pizza*
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New Member
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Oct 26, 2008, 11:13 AM
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*take out mp3 and starts listening waiting for help*
<><don't fear the reaper we all die eventually><>
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Uber Member
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Oct 26, 2008, 11:17 AM
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Originally Posted by klaus13239
what i mean bye 5 tetrahedron is show as my image 5 interlocking triangles
Are you sure? There are no 5 sided isohedra. (tetra means 4, it's from greek)
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New Member
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Oct 26, 2008, 11:19 AM
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Really? Well try explaing that to my teacher let me give you a link I found for it
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New Member
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Oct 26, 2008, 11:21 AM
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Uber Member
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Oct 26, 2008, 11:23 AM
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That's a "compound of 5 tetrahedrons" not a "5 tetrahedron"! Anyway now we are on the same page!
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New Member
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Oct 26, 2008, 11:24 AM
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Okay so can u help meh?
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New Member
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Oct 26, 2008, 11:24 AM
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And I'm sorry about confusing both of us
<><don't fear the reaper we all will die eventually><>
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New Member
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Oct 26, 2008, 11:28 AM
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*sees pizza guy coming and goes to get cash for pizza*
<><don't fear the reaper we all will die eventually><>
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New Member
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Oct 26, 2008, 11:47 AM
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*leaves to go to Google to find it*
<><don't fear the reaper we all will die eventually><>
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New Member
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Oct 26, 2008, 12:39 PM
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Ronly I am so ronly
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