a well of a diameter 8m has been dug out to a depth of 21m the volume earth dug out is
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Answered by
5
(22÷7)×(8÷2)×21
1056 might be the answer for your question
chikkapranav:
bro u have to exclude the volume of the top cirle of thw cylinder
sorry I forgot
not its k its not the matter about sry plz edit ur ans cause tje person who asked this question will write the ans wrong plz check
Answered by
1
consider the well as a cylinder where the top surface is open
we should minus the volume of the top circle so,
volume of the cylinder - volume of the top circle
πr^2h- πr^2
π[r^2h- r^2]
22/7[ 4×4×21-(4×4)]
22/7[ 336-16]
22/7[ 320]
7040/7
1005.7
so, volume of the well is 1005.7 m^3
we should minus the volume of the top circle so,
volume of the cylinder - volume of the top circle
πr^2h- πr^2
π[r^2h- r^2]
22/7[ 4×4×21-(4×4)]
22/7[ 336-16]
22/7[ 320]
7040/7
1005.7
so, volume of the well is 1005.7 m^3
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