m = S * V m - masa S - densitatea V - volumul Vcub=l³ l=1cm V=1cm³ S fier=[tex] \frac{7860kg}{m^{3}} = \frac{7.86g \times 1000000}{1cm^{3} \times 1000000} = \frac{7.8g}{cm ^{3} } [/tex] m= S * V = [tex] \frac{7.8g}{cm^{3}} \times 1cm^{3} = 7.8g[/tex]
