zad 1 Zamieni jednostki 10 a ile to m2 20 dm2 ile to cm2 2870000 m2 ile to km 2 Zad 2 oblicz pole koła o promieniu 7 cm
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zad 2.
π(7cm)²=49cm²π
zad 3.
10a=1000m²
20dm²=2000cm²
2870000m²=2,87km²