12.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 the height of embankment.
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r=5cm
h=14cm
R=10cm(r+width)
H=?
so,
volume of well=volume of embankment
πr²h=π(R²-r²)H
r²h=(R²-r²)H
5²×14=(10²-5²)H
25×14=(100-25)H
H=25×14/75
H=14/3
H=4.667cm
h=14cm
R=10cm(r+width)
H=?
so,
volume of well=volume of embankment
πr²h=π(R²-r²)H
r²h=(R²-r²)H
5²×14=(10²-5²)H
25×14=(100-25)H
H=25×14/75
H=14/3
H=4.667cm
ReetChauhan1112:
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wlcum
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