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zad.2 Prombu=e×f÷2
e=6 f=4
Pr.=6×4÷2=12
Ptrójkąta=a×h÷2
a=3 h=3
Pt.=3×3÷2=4.5
Pwielokąta=Pt.1+Pt.2
Pt.1=4×2÷2=4
Pt.2=4×6÷2=12
Pwielokąta=12+4=16