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a² = 64 cm²
a = 8 cm
V = Pp * a = a * a²√3/4
V = a³ * √3/4
V = 128√3 cm³
Odp. Szukana objętość wynosi 128√3 cm³.
Pozdrawiam :)
Objętość:
V=1/4a²√3*H
V=1/4*64√3*8
V=128√3 cm³