A well of diameter 3 is dug 14m deep .the earth raken out of it has been spread evenly all around it in shape of a circular ring of width 4 m to form an embankment. Find the height of the embankment
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r=1.5m
h=14m
volume of well=πr²h
22/7×1.5×1.5×14
99m3
99=volume of hollow cylinder or embankment
99=πh(R²-r²)
99=22/7×h{(5.5)²-(1.5)²}
99=22h/7(5.5+1.5)(5.5-1.5)
99=22h/7×7×4
88h=99
h=9/8
h=1.12m
h=14m
volume of well=πr²h
22/7×1.5×1.5×14
99m3
99=volume of hollow cylinder or embankment
99=πh(R²-r²)
99=22/7×h{(5.5)²-(1.5)²}
99=22h/7(5.5+1.5)(5.5-1.5)
99=22h/7×7×4
88h=99
h=9/8
h=1.12m
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