Odpowiedzi

2009-10-28T18:45:44+01:00
2009-10-28T18:46:14+01:00
810 kg/m3 = 810 * 1000g/1000000cm3
810 kg/m3 = 810/1000 g/cm3
810 kg/m3 = 0,81 g/cm3
3 2 3
2009-10-28T18:47:05+01:00
810kg/m³=810×1000=810000g/cm³
2 3 2