Question

find the expenditure of digging a cylendrical well depth 12m and diameter 4m at the rate of 200 per cubic meter π=3.14​

Answer 1

Step-by-step explanation:

$here \\ \: depth = height = 12m \\ radius\: = \frac{d}{2} = \frac{4}{2} = 2m \\ volume \: of \: cylinder =volume \: of \: cylindrical \: well \\ \pi {r}^{2} h = volume \: of \: cylindrical \: well \\ \pi \times {2}^{2} \times12 =volume \: of \: cylindrical \: well \\ \pi \times 4 \times 12 = volume \: of \: cylindrical \: well \\ 48\pi = volume \: of \: cylindrical \: well \\ 150.79 \: {m}^{3} = volume \: of \: cylindrical \: well \\ cost \: of \: digging \: well \: = 200 \times 150.79 \\ cost \: of \: digging \: well \: = 30,158$

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