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P =a*h / 2=
P=6*4 /2
P= 24/2
P=12 cm kwadratowych
Ob:5+5+3+3= 10+6=16
Ob=16cm
2
Ob=10*4=40cm
P=p * q /2
P=8*4 /2= 32/2
P=16cm kwadratowych
3
Ob=13*2 + 14*2=26+28=54cm
P= p * q /2
P=14*13
P=42 cm kwadratowe