Question

In a village a well 10m inside diameter, is dug 14m deep . earth taken out of it spread all around to a width of 5 m to form an embankment . find the height of embankment . what value of the villager is reflect here ?

Answer 1

Answer:Radius of well = 5 m

depth = 14 m

volume of earth taken out = πr² h = π×(5)²×14= 1100 m³

now, it is spread to form embankment, which is in the form of hollow cylinder,

inner radius, r= 5 m

outer radius = 5 +5 = 10 m

height= h

then, 1100 = π×h(10²- 5²)

⇒h = 350/75 = 14/3 = 4.67 m

Answer 2

plzz refer the attachment

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