Posted by **Melissa** on Tuesday, December 11, 2012 at 9:01am.

A 7.9cm diameter horizontal pipe gradually narrows to 5.9cm . When water flows through this pipe at a certain rate, the gauge pressure in these two sections is 31.0kPa and 21.0kPa , respectively.

What is the volume rate of flow? in m3/s

please help!

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