Question

A well of diameter 14 m is dug 15. M deep .the earth taken out of it has been spread evenly to form circular embankment all around the wall of width 7 m .find the hight of the embankment.

Answer 1

d=14
r=7
v=
$v = \pi{r}^{2} h$
this volume will be same as the volume of embankment
height of the embankment be small h'

circular width =7m
radius of embankment=7/2