Tolong dibantu nomer 53. Makasih sebelumnya.

[tex]\displaystyle m=3,14\,\text{kg}\\r=0,1\,\text{m}\\\\\rho=?\\\\\rho=\frac{m}{V}\\\rho=\frac{m}{\frac43\pi r^3}\\\rho=\frac{3,14}{\frac43\cdot3,14\cdot0,1^3}\\\rho=\frac{3}{4\cdot0,001}\\\rho=\frac{3}{4}\cdot1000\\\rho=\frac{3}{4}\cdot1000\\\rho=750\,\text{kg/m}^3\\\\\rho\ \textless \ \rho_d\ \textless \ \rho_c\ \textless \ \rho_b\ \textless \ \rho_a\\\\\therefore\text{ yang benar adalah A dan D}[/tex]