Question

1. A well with 10 m inside diameter is dug
14 m deep. Earth taken out of it is spread
all around to a width of 5 m to form an
embankment. Find its height.​

Answer 1

Answer:3.5m

Step-by-step explanation:Diameter of well = 10 m

Radius of well =

Depth of well = 14 m

Volume of well =

=

=

Earth taken out of it is spread all a round to a width of 5m to form an embarkment.

Radius of embarkment. = 5 m + 5 m = 10 m

let the height of embankment be h

Volume of embankment =

=

Since Earth taken out of it is spread all a round to a width of 5m to form an embarkment. So, volume of well = Volume of embankment

So,

Hence the height of embarkment is 3.5 m