Weight of a Hollow Mild Steel Sheet Box

(Density of mild steel per mm³) * [(1790* 830 * 200) - (1786.8 * 826.8 * 196.8)].

First calculate the area (l x w) of all the sides. You'll end up with square meters. Multiply that by the metal thickness in meters (.0016m). That will give you a small part of a cubic meter. Multiply that by the weight of a cubic meter of steel, which can be found with a Google search.

Thank you friend for the help.

Regards,

Abizer.