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Find the volume of a regular tetrahedron whose altitude measures 10 cm.
 one year ago
 one year ago
Find the volume of a regular tetrahedron whose altitude measures 10 cm.
 one year ago
 one year ago

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hartnnBest ResponseYou've already chosen the best response.1
the formula is V = \(\sqrt 2\)/12 * a^3
 one year ago

erosheaBest ResponseYou've already chosen the best response.2
it is not the edge that is given but the ALTITUDE..
 one year ago

erosheaBest ResponseYou've already chosen the best response.2
altitude = root(2/3) * a 10 = root(2/3) * a 100=2/3 a^2 a= 5 root 6 V = root(2)/12 * a^3 V = 216.5
 one year ago

MiyuruBest ResponseYou've already chosen the best response.0
I thought it like this..\[\large\color{green}{x=\frac{100}{\sqrt{3}}}\] dw:1353600894733:dw
 one year ago

MiyuruBest ResponseYou've already chosen the best response.0
Sorry..\[\large\color{green}{x=\frac{10}{\sqrt{3}}}\]
 one year ago

MiyuruBest ResponseYou've already chosen the best response.0
@eroshea I am glad tht u got it..:D :)
 one year ago

erosheaBest ResponseYou've already chosen the best response.2
thanks for your help @hartnn and @Miyuru ^^
 one year ago

erosheaBest ResponseYou've already chosen the best response.2
well, you tried helping me.. so thanks :))
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
u got it on your own, @eroshea :)
 one year ago

MiyuruBest ResponseYou've already chosen the best response.0
Is my way wrong @hartnn
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
if u got the same volume, then u are correct.
 one year ago

MiyuruBest ResponseYou've already chosen the best response.0
OHH Anyway thnks for U all and Welcome...
 one year ago

MiyuruBest ResponseYou've already chosen the best response.0
Ohh @eroshea you mean the height is 10.. Isn't it ?
 one year ago

MiyuruBest ResponseYou've already chosen the best response.0
I thought it was the altitude of a triangle.. :P
 one year ago

erosheaBest ResponseYou've already chosen the best response.2
no.. it's the height of the tetrahedron
 one year ago

MiyuruBest ResponseYou've already chosen the best response.0
Ok got it.. :) Then your way is correct. :D
 one year ago

kneenutskiiBest ResponseYou've already chosen the best response.0
what is the figure and where did 2/3 came from?
 11 months ago
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