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> Tetraedar, Treba mi resenje jednog zadatka

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post Jun 15 2011, 09:00 PM
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Oko tetraedra je opisana sfera prečnika R. Odrediti zapreminu tetraedra i stranicu.
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pyost
post Jun 15 2011, 10:27 PM
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Poluprecnik sfere opisane oko tetraedra je sqrt(3/8)*a, pa odatle moze da se izracuna stranica. Zapremina je onda sqrt(2)/12*a^3


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