1)Oblicz objetosc czworoscianu foremnego okrawędzi długosci 8 cm.
2)Oblicz objetosc czworoscianu foremnego owysokosci 6 cm.
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Zad 2 .
h= 6 cm
h= √6 /3a
6= √6/3a / · 3
18=√6a / : √6
a=3√6 (cm)
V = a³√2 : 12 = 3√2³√3 : 12 = 13,5 √18 (cm)³=40,5√2
Zad 1.
a= 8 cm
V = 8³√2:12=512√2:12=128√2/3 (cm)³