Pole prostokąta to iloczyn jego boków
[tex]a=0,005 \ km=0,005\cdot1000 \ m=5 \ m=5\cdot10 \ dm=50 \ dm\\\\b=1,4 \ m=1,4\cdot10 \ dm=14 \ dm\\\\\text{P}=50 \ dm\cdot14 \ dm=\boxed{700 \ dm^2}[/tex]
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Pole prostokąta to iloczyn jego boków
[tex]a=0,005 \ km=0,005\cdot1000 \ m=5 \ m=5\cdot10 \ dm=50 \ dm\\\\b=1,4 \ m=1,4\cdot10 \ dm=14 \ dm\\\\\text{P}=50 \ dm\cdot14 \ dm=\boxed{700 \ dm^2}[/tex]