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pp= a²√3/4 (ułamek)
pp=12²√3/4 (ułamek)
pp=144√3/4 (ułamek)
pp=36√3
Pb=3×(½a×h)
Pb=3×(½36√3×12×12)
Pb=3×(18√3×12×12)
pb=3×2592√3
pb=7776√3
Pc= 36√3+7776√3
Pc=7812√3