12-inch diameter pipeline flowing velocity is 4 feet per second Answer in cubic feet per sec?

Answer 1

8

Answer 2

If there was a cylinder of length 4ft that fits the pipe, ie has a diameter of 12in flowing through the pipe it would take 1 second to pass a point, or in other words, in 1 second a volume equal to that of the cylinder has flowed through the pipe. Thus:

flow = {pi} x 62 x 48 cu in ~= 5429 cu in per sec.