Answer :

Let the depth of each hole be h.

Given , length of each hole = 14m


breadth of each hole = 8m


total no. of holes = 30


Total quantity of soil = 2520 m3


As, total volume of soil in 30 holes = total quantity of soil


therefore, 30×14×8×h = 2520


h =


h = 0.762 m.


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