Question

A well with inner radius 4m is dug 14m deep.Earth taken out of it has been spread evenly all around to a width of 3m to form an embankment.Find the height of the embankment

Answer 1

We know that the well is cylindrical. So its volume is πr²h

Volume= 22/7*4²*14

=> 704m³

Now,

The width of the embankment is 3m

Volume of the soil= 704m³

Volume = πh(R²-r²)

R=inner radius +width of embankment

4+3=7

=> 22/7*h*(49-16)=704

h=704*7/22*33=6.79m

Answer 2

Answer:

Step-by-step explanation:hear is the explanation

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