Question

find in tonnes the weight of water which a tank 8 m long, 7 m wide and 5 m deep will hold if 1 litre of water weight 1 kg. ( 1 tonne=1000kg)

Answer 1

vol. = lbh
7×5×8
280m^3

280×1000
280000 litre = 280000 kg
280000/1000
280 tonnes

Answer 2

Hi Pryanshu37 !
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Volume of tank = lbh 
length   (l)         = 8m 
breadth(b)        = 7m 
Height  (h)        = 5 m
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Volume of tank = lbh 
                         = 8 x 7 x 5 
                         = 280 m³
                         =  280,000 litres = 280,000kg = 280 tonnes 
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