Calculate the mass of this piece of wood. Show your working and give the units. – 7501

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1. 20 cm = 0.2 m
   30 cm = 0.3 m
   120 cm = 1.2 m
   Now calculate the volume:
   Volume = 0.2 × 0.3 × 1.2 = 0.072 m³
   density = mass / volume
   Substitute values (density is given as 180 kg/m³):
   mass = 180 × 0.072 = 12.96 kg

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