A well of inner diameter 14 m is dug 12 m deep. The earth taken out of it has been spread evenly all around it in the shape of a circular ring of width 7 m to form an embankment. Find the height of the embankment.

Explanation

Given,Inner diameter of well =14 m


so,Inner radius =`14/2=7m`


Depth (h)=`12 m`


so, Volume of earth dig out =`pir^2h`


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