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P=a*b
P=6*(5+2)
P=6*7=42
Pole 2 prostokąta:
P=6*8=48
Pole tego malutkiego prostokąta:
P=1*2=2
Pole całej figury:
42+48-2=88
P2=6*8=48
P3=2*1=2
P=P1+P2-P3
P=30+48-2=76