1. 7,8 g/cm^3= 7,8 * 1000 kg/m^3= 7800 kg/m^3
2. 10,8 g/cm^3 = 10800 kg/m^3
3. gęstość = 280/32,8=8,5 g/cm^3 = 8500 kg/m^3
4. gęstość = 90/32,8 = 2,7 g/cm^3 = 2700 kg/m^3
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1. 7,8 g/cm^3= 7,8 * 1000 kg/m^3= 7800 kg/m^3
2. 10,8 g/cm^3 = 10800 kg/m^3
3. gęstość = 280/32,8=8,5 g/cm^3 = 8500 kg/m^3
4. gęstość = 90/32,8 = 2,7 g/cm^3 = 2700 kg/m^3