Find the weight of solid rectangular iron piece of size 50 cm×40cm × 10 cm, if 1 cm3 of iron weights 8 gm.
Given,
Dimension of rectangular iron piece = 50cm×40cm×10cm
Volume of solid rectangular = 
Weight of 1 cm3 iron = 8 gm
∴ weight of 20000 cm3 iron = 
10