Question

a well with inside diameter 10 M is dug 8.4 M deep Earth taken out of it spread all around it to a weight of 7.5 metre to form an embankment find the height of the embankment​

Answer 1

Answer:

Step-by-step explanation:

Given radius of the well = 5 m

Height of the well = 14 m

Width of the embankment = 5 m

Therefore radius of the embankment = 5 + 5 = 10 m

Let h be the height of the embankment

Hence the volume of the embankment = volume of the well  

That is π(R – r)2h = πr2h

(102 – 52) x h = 52 x 14

(100 – 25) x h = 25 x 14

h = (25 x 14)/75 = 14/3

Therefore, h = 4.67 cm or 5cm nearly