Question

Water is flowing through a PVC pipe at a rate of 800 ft /min The maximum flow of water in a pipe can be modeled by the formula F = Av , where A is the cross- sectional area of the pipe and is the velocity of the water. Find the maximum flow, in f ^ 2 / m * in , of a PVC pipe whose diameter is 4 inchesHint: Convert inches to feet.

Answer 1

the radius of the pipe is 2in, so
F = (4π in^2)(1ft^2/144in^2)(800 ft/min)
or, per the hint,
F = π(1/6 ft)^2(800 ft/min)

Answer 2

I cannot stress this enough but oobleck, you are completely flaccid. First off, in order to find the radius, you must use the 2nd derivative of the eq 3x^2+7x^2cos3x to get your final answer. Then, you would need to build a replica of this pipe and use a measuring tape to measure out the length. Thank you for your time, and I hope you do check your math