Question

A well 20 m in diameter is dug 14 m deep and the earth taken out is spread all around it to a width of 5 m to form an embankment. The height of the embankment is

Answer 1

Answer:

11.2m

Step-by-step

π(10)2×14=π{152−102}×H

H=100×14125=11.2m

Answer 2

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