A field is in the form of a rectangle of length 18 m and width 15 m. A pit, 7.5 m long, 6 m broad and 0.8 m deep, is dug in a corner of the field and the earth taken out is spread over the remaining area of the field. Find out the extent to which the level of the field has been raised.

Given,


Dimension of rectangular field = 18m ×15m


Dimension of pit = 7.5m×6m×0.8m


So, area on which earth taken out is to be spread = 18×15 – 7.5×6=225 m2


Let level of earth rises in field = h meter


So,


=225×h = 7.5×6×0.8


= h =


22