Question

a well with 10 m inside diameter is dug 8.4 m deep . earth taken out of it is spread all around it to a with of 7.5 to from an embankment. find the height of the embankment?

Answer 1

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here's ..


Question :: ✒

A well with 10 m inside diameter is dug 8.4 m deep . earth taken out of it is spread all around it to a with of 7.5m to from an embankment. find the height of the embankment?


SOLUTION :: ✒

given :

diameter of inside well = 10m

or,. (r) radius of inside =
$\frac{10}{2} = 5m$
width of embarkment = 7.5 m

It can be observed that , embarkment is cylindrical in shape ,

(r') radius from the embarkment = 7.5 + 10 = 17.5 m



height of the well (h) = 8.4m

let height of the embarkment be h'

To find :

height of the embankment .

Solve :

Volume of solid dug from well = Volume of earth used to form embarkment

$...$
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HOPE this helps !

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