Question

drilling a well can provide a sustainable source of clean water wells have been drilled for thousands of years.a well with 10 metre inside diameter is dug 14m deep in the field as shown Earth taken out of it is spread all around to a width of 5 metre to form an embankment find out of embankment

Answer 1

Embankment height  = 14/3 m = 4.67 m

Step-by-step explanation:

Inside Diameter of well = 10 m

Radius = 10/2 = 5 m

Depth of Well = 14 m

Volume of Earth taken out = π R²H

= π 5² * 14

= 350π m³

5 m width around it

Hence radius of outer circle = 5 + 5 = 10 m

Area of Width = π( 10² - 5²)

= 75π  m²

embankment height  =  350π / 75π

= 350/75

= 14/3 m

= 4.67 m

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