a fost răspuns

20 m/s = ?km/min =  ?km/h

12 KG/m3 = ? g/cm3 = ? g/l

Răspuns :

Randall201173ask
20m/s=20 ori1/1000/1/60=1.2km/min=20ori1/1000/1/3600=72km/h
12kg/m3=12ori1000/1000000=0,012g/cm3=0,012 /1000=1,2 ori 10 la -5