A well with 10 m inside diameter is dug 14 m deep. Earth taken out of it is spread all around to a width of 5 m to form an embankment. Find the height of the embankment.
Volume of a cylinder = 
Radius of well = 5m , Height of well = 14m
Volume of the well =
For embankment, radius = 5+5 =10 m and let height be h m
Volume of well = Volume of embankment
⇒ h = 4.67 m
16