Question

The dimensions of a rectangular field are 15m and 12 m . A well of diameter 3m is dug 21 m deep in the centre of the field and the earth removed from this pit is evenly spread over the remaining area of the field. Calculate by how much the level of field is raised?​

Answer 1

Answer:

15*12=22/7*9/4*21

15*48=22*27

h=99/120

h=33/40

h=82.5 cm