oblicz pole pocztówki zapisz je w dwóch jednostkach
16cm,2dm
P=.....cm2=.....dm2
2dm=20cm
16cm x 20 cm = 320cm2
16cm = 1,6dm
1,6dm x 2dm = 3,2dm2
2dm = 20cm
P = 16cm * 20cm = 320cm^2
P = 1,6dm * 2dm = 3,2dm^2
P=320cm2=3,2dm2
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2dm=20cm
16cm x 20 cm = 320cm2
16cm = 1,6dm
1,6dm x 2dm = 3,2dm2
16cm = 1,6dm
2dm = 20cm
P = 16cm * 20cm = 320cm^2
P = 1,6dm * 2dm = 3,2dm^2
P=320cm2=3,2dm2