A well with 10 m diameter is dug 14 m deep. Earth taken out of it is spread all around to form an embankment of width 5 m. Find the height of the embankment.

Explanation

Area of embankment=`piR^2-pir^2`

`75pi`

Volume of embankment=`75pi*h=pi*5^2*14`

`(10^2-5^2)*h=5^2*14`

`h=(5*5*14)/(5*15)`

`h=14/3m`

`h=4.67m`.