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3,2 ha=32000m²
300ar=3ha
20000m²=2ha
600m²=6ar
20ha=2000ar
500ar=50000m²
Zad.1.
a=0,5dm=5cm
P=5dm²
P=a×b
b=P/a
P=5dm²/0,5dm
P=10dm=100cm
P=5cm×100cm
P=500cm²
a=1,5m=15dm=150cm
b=2cm=0,2dm
P=a×b
P=150cm×2cm
P=300cm²
P=15dm×0,2dm
P=3dm²
a=0,12m=1,2dm=12cm
b=3dm=30cm
P=a×b
P=12cm×30cm
P=360cm²
P=1,2dm×3dm
P=3,6dm²