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V = a³√2/12
Pc = 12²√3
Pc = 144√3 cm ²
V = 12³√2/12
V = 1728√2/12
V = 144√2 cm³
Liczę na naj :D
Pb=3*144√3=432√3
Pc=144√3+432√3=576√3 cm²
wysokość podstawy :
h=(12√3):2=6√3
V=⅓*Pp*H
H=?
Pp=144√3
obliczamy wysokosc ostroslupa z pitagorasa
H²+(2√3)²=12²
H²+12=144
H²=144-12
H²=132
H=√4*33
H=2√33
V=⅓*144√3*2√33=48√3*2√33≈956cm³