how many cubic metres of soil must be dug out to make a well 20 m deep and 2 m in diameter.
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The amount of cubic metres is equal to the volume of the cylindrical well..
Radius of well=2/2= 1m
Height / Depth of the well=20m
Volume of a cylinder=π r^2 h
=>【 22/7 × 1×1 ×20 】m^3
=>【 440/7 】 m^3
=> 62.85 m^3
Hope it helps...
Radius of well=2/2= 1m
Height / Depth of the well=20m
Volume of a cylinder=π r^2 h
=>【 22/7 × 1×1 ×20 】m^3
=>【 440/7 】 m^3
=> 62.85 m^3
Hope it helps...
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