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The external measurements of a closed wooden box are 1.5m long, 0.8m wide and 0.3m high. The wood used in making the box is 0.1cm thick and has a density of 0.75g/#cm^3#. The box contains 30 packets of 12 similar tools and each tool has a mass of 125g.
calculate :
a) the volume of wood used for making the box
b) b)the mass of the empty box in Kg
c) c)The gross mass of the box in Kg