Q15 of 94 Page 222

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


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