Question

A well of diameter 4m is dug 21 m deep. The earth taken out of it has been spread evenly all around it in the shape of circular ring of width 3m to form empanelment. find the height of embankment.​

Answer 1

Step-by-step explanation:

volume of cylinder= pi*r*r*h

22/7*4*21

=264. 1

volume of embankment= (R*R -r*r)

= 5*5 -2*2

= 9. .2

height = 1/2

29.33 m