Question

A well with 21m inner diameter is dug 10m deep.earth taken out of it,has been evenly spread all around it to a width of 14m to form an embankment.the height of the embankment is

Answer 1

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Answer 2

Answer: 2.25

Step-by-step explanation:

Volume of well = 3465 m cube

Vol of embankment or ring(around the well)

Is pi*h(R^2-r^2)

pi*h(24.5^2-10.5^2)

1540h

Volume of well =Vol of embankment

3465= 1540h

h = 2.25 m or 9/4 m.