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va rog ajutatima
240 mm= cm
240cm= mm
720cm= dm
720dm= cm
350m= dm
450dm= m
4000m= km
840km= m


Răspuns :

0.0240cm
0.2400mm
840x1000m=
4000m este 4km
240mm = 24 cm
240cm =2400 mm
720 cm = 72 dm
720dm = 7200 cm
350 m = 35 dm
450 dm =45 m
4000m =4 km
840km = 8 m