A pit 5 m long and 3.5 m wide is dug to a certain depth. If the volume of earth taken out of it is 14 m3, what is the depth of the pit?
We know that,
Volume of cuboid = Length × Breadth × Height
Let the depth of the pit be x m
Therefore,
Volume = 5 × 3.5 × x
It is given in the question that,
Volume = 14 m3
Therefore,
Depth, x = 
x = 
= 0.8 m
= 80 cm
15