2,54 g/cm³=.........kg/m³ Sama caranya pliss

2,54 g/cm^3

... (2,54 : 1000) kg
= ------------------------
....(1 : 1000000) m^3

...2,54
= --------- × 1000000 kg/m^3
.....1000

= 2540 kg/m^3