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h=wysokosc podstawy=a√3/2
1/3h=1/3a√3/2=a√3/6
H=wysokosc bryły
a=dł. krawedzi poodstawy
cos 60=1/3h / k
1/2=a√3/6 /4√3
a=12
Pp=a²√3/4=12²√3/4=36√3
tg60=H/1/3h
√3=H/2√3
H=6
v=1/3*36√3*6=72√3j.³