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H=10cm
Pc=2Pp+Pb
Pp=3a²√3/2 wzór
Pp=3*5²√3/2=3*25√3/2=75√3/2 cm²
2Pp=75√3 cm²
Pc=75√3+6*5*10=75√3+300
Pc=75(√3=4) cm²
V=Pp*H
V=10*75√3/2=5*75√3
V=375√3 cm³