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A cylindrical pipe under a road is 150 feet long and has a diameter of 4 feet. The pipe is consistently full of water, and the water flows at a rate of one foot per second. How much water enters the pipe in one day, measured to the nearest 10,000 cubic feet.

 

*Diameter of 4 feet, not radius.

 Nov 22, 2018
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OK.....what length of pipe is a cubic foot?

pi x r^2 x l = 1

3.14 x 2^2 x l = 1      l = .079577 ft of pipe is a cubic foot

1 foot per second is then    1/.079577 ft^3 of water per second = 12.566 ft^3/sec

12.566 ft^3/sec x 3600 sec/hr x 24 hr = 1,085,734 ft^3/day ~~~ 1,090,000 ft^3 /day

 Nov 22, 2018

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