A well whose diameter is 7 m has been dug 22.5 m deep and the earth dug out is used to form an embankment around it.If the height of the embankment is 1.5 m.Find the width of the embankment.

Asked by  | 5th Feb, 2012, 10:38: AM

Expert Answer:

Volume of well = Volume of embankment
So pie*(3.5)2 *22.5 = pie *(x)2 * 1.5 - pie * (3.5)2 * 1.5
On solving we get x = 14 m
So width of the embankment = 14 - 3.5 = 10.5 m 

Answered by  | 5th Feb, 2012, 12:03: PM

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