Salut, rezolvarea exercitiului o gasesti mai jos!
Răspuns:
[tex]\rho = densitatea = [\frac{kg}{m^3}]\\\\\rho = \frac{masa}{volum}=\frac{m}{V} = \frac{216g}{90cm^3}=\frac{216*10^{-3}kg}{90*10^{-6}m^3}\\\\\rho = \frac{216}{90}*10^{-3-(-6)}=2.4*10^3=2400\frac{kg}{m^3}[/tex]
