Question

a field is 200m long and 120 m wide. A plot (outside the field) 60 m long and 50 m wide is dug to a depth of 12 m and the earth taken out from the plot is spread evenly in the field. By how much is the level of field raised?

Answer 1

volume of outside plot=l*b*h
12*50*60=200*120*h
12/16=h
h=3/4m
or 75 cm