Find the cost of sinking a tubewell 210 m deep having diametre 4m at the rate of 5.50 per cubic m
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14520 ruoees
here diameter is 4m so r=2m
π r²h = 22/7x2x2x210
= 88*30
=2640 cub meter
cost of sinking tubewell at rate 5.50vper cub m
=2640*5.50
=14520 rupees
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