[tex]\it 1kg=1000g\\ \\ 1m^3=1000dm^3=1000000cm^3\\ \\ \rho=11300\dfrac{kg}{m^3} =11300\cdot\dfrac{1000}{1000000}\ \dfrac{g}{cm^3}=11,3\dfrac{g}{cm^3}\\ \\ \\ \rho=\dfrac{m}{\mathcal{V}} \Rightarrow m=\rho\cdot\mathcal{V}=11,3\cdot12=135,6g\ (toate\ cele\ 100\ de\ alice)\\ \\ \\ 135,6:100=1,356g\ (masa\ unei\ alice)[/tex]
