Question

Convert 1 gm per centimetre cube into kilogram per metre cube???

Answer 1

1 g/cm3 = 1000 kg/m3
ex. cnovert 21g/cm3 to kg/m3 
21 g/cm3 = 21 * 1000
               = 21000 kg/m3

Answer 2

1 g/cm3 = 1000 kg/m3
3gm/cm³ = 3×1000
              = 3000kg/m³