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Pp=28800cm²
V=Pp*h=(40*40)*80=128000cm³=128l
V=128l
Bryła B-ośmiokąt foremny
160cm :8=20cm -miara jednego boku
Pb=8*(20*20)=8*400=3200cm²
zad6
Pp=50*50=2500cm²
Pb=4*1/2*50*60=2*50*60=100*60=6000cm²
Pc=6000cm²+2500cm²=8500cm²