Question

v=0,5 cm cub. ro plumb=11300 kg/m cub

Answer 1

√$ro= \frac{m}{V} =\ \textgreater \ m = ro * V \\ ro=11300kg/m^{3} = (11300 : 1000 ) g/cm^{3} = 11,3g/cm^{3} \\ m=11,3g/cm^{3} * 0.5 cm^{3} =\ \textgreater \ m = 5,65g$