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2015-02-27T21:10:48+05:30

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it will be in cylindrical shape
given height = 21m
         radius = 1.5m = 15/10m = 3/2m
volume of cylinder = volume of earth dug up
 volume of cylinder = πr²h
                               = 22/7×3/2×3/2×21
                               = 22/7×9/4×21
                               = 11×9/2×3
                               = 297/2
                               = 148.5 m³
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2015-02-27T21:35:51+05:30

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height = 21m
radius = 1.5m =3/2m
volume of cylinder = πr²h
                        = \frac{22}{7} * \frac{9}{4} *21 \\  \\ 

                               = 148.5 m³


volume of earth dug up=148.5 m³
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