An open barge has the dimensions 22m width x 12m height x 40 m length.a) If the barge is made out of 4cm thick steel plate on each of its four sides and its bottom, what mass of coal can the barge carry in freshwater without sinking?Density of steel = 7800 kg/m^3b) Is there enough room in the barge to gold this amount of coal?Density of coal = 1500 kg/m^3