The number of planks of dimensions (4m x 50cm x 20cm) that can be stored in a pit which is 16 m long, 12 m wide and 40 m deep is
Dimension of plank = (4m
50cm
20cm)
= (4m
0.5m
0.2m)
Dimension of pit = (16m
12m
40m)
Thus no of planks that can be fitted into the pit
= 
= 1920 m3
This is option b.
9