Math, asked by Aryamarar, 11 months ago

a well of diameter 3M is dug 14m deep the earth taken out of it has been spread evenly all around it in the shape of a circular array of with 4 metre to form an embankment find the height of the embankment​

Answers

Answered by anjali1063
3

Answer:

Solution:-

Height of the well = 14 m

Diameter of the well = 3 m

So, Radius of the well = 3/2 m

Volume of the earth taken out of the well = πr²h

= 22/7*(3/2)²*14

= 99 cu m

Outer radius of the embankment = R = (3/2 + 4)m = 11/2 m

Area of embankment = outer area - inner area

⇒ = πR² - πr²

= 22/7*[(11/2)² - (3/2)²]

= 22/7*[(121/4) - (9/4)]

= 22/7 × 112/4

= 88 m²

Height of the embankment = Volume/Area

= 99/88

Height of the embankment = 1.125 m

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