Q. 40

A well with 10 m inside diameter is dug 8.4 m deep. Earth taken out of it is spread all around it to a width of 7.5 m to form an embankment. Find the height of the embankment.

Answer :


Inside diameter of well = 10 m

Inside radius =

depth of well = 8.4 m

Volume of earth dug out =

Area of embankment formed =

Height of embankment thus formed =

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