Odpowiedzi

2009-11-25T16:57:13+01:00
M = d*v
1dm³ = 1000cm³
m = 1000cm³*0,72g/cm³ = 720g = 72 dag
2009-11-25T17:01:20+01:00
2009-11-25T17:04:27+01:00