I just need a little help I got this far and got stuck again.
0.10 mm=0.010cm
V= (4/3) (0.010cm) ^3= 1.3333x10^-06
M= (1.3333*10^-06cm^3)*(4.0*10^14g/cm ^3) =
0.10 mm=0.010cm
V= (4/3) (0.010cm) ^3= 1.3333x10^-06
M= (1.3333*10^-06cm^3)*(4.0*10^14g/cm ^3) =