Question

a well of diameter 3m is dug 14m deep. the earth taken out of it has been spread evenly all around it in the shape of a circular ring of width 4m to form an embankment. find the height of the embankment. ........plzz ans this question.

Answer 1

it's answer is ..I hope you find it easy to understand

Answer 2

Here is ur answer!!!
Diam. of well=3,radius =1.5m
depth of well=14m
Volume of earth taken out by digging=πr^2h
π*1.5*1.5*14=31.5π
let the height of the embankment be the =h m
volume of earth used for embankment=π[R^2-r^2]*h
=π[(4+4)^2-(4)^2]*h
=π[64+16]h
=π[80]h
volume of earth digged= volume of the earth for embankment
=31.5π=80πh
=31.5/80=h
=0.39 m