A barrel contains 285 kg of water.
What is the volume of the water?
(Unit = m^3)

285 Litre ( 1kg of water occupies 1 Litre )

which is identical to 285 dm^3 ie 285 cubes of length 10 cm

and as there are 10 of these linearly in 1 m then there are 10^3 = 1000 dm^3 in each m^3

giving a volume of 0.285 m^3

Of course if you KNEW that 1m^3 of water has a mass of 1000 kg then you would simply have said that the volume was 285/1000 m^3

the answer is joule (J)

Explanation:

hope it helps