Question

A well of radius 7 m is dug 8 m deep. The earth taken out of it is evenly spread all around it to a width of 21 m to form an embankment. What is the height of the embankment?? Answer this fast.
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Answer 1

ANSWER :

Given: 7m radiu6 and 8m deep.

so radius is 7m. so volume is V = 3.141*7^2*8 =1231 m^3

find the area of whole thing minus the well.radius is 21+7=28m

area A = 3.141*28^2 - 3.141*7^2 = 2308m^2

so the height = 1231 / 2308 = 0.533m = 53.3 cm.

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Answer 2

Step-by-step explanation:

Hope it is helpful to you.