"A field is 150m long and 100m wide. A plot   (outside the field) 50m long and 30m
Channel: Doubtnut
Date: 12/07/2020

"A field is 150m long and 100m wide. A plot
 
  (outside the field) 50m long and 30m wide is dug to a depth of 8m and the
 
  earth taken out from the plot is spread evenly in the field. By how much is
 
  the level of field raised?"