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Water is flowing in a cylindrical pipe of varying circular cross-sectional area, and at all points the water completely fills the pipe.

Part A) At one point in the pipe, the radius is 0.155m . What is the speed of the water at this point if the volume flow rate in the pipe is 1.30m^3/s.

Part B) At a second point in the pipe, the water speed is 3.80m/s. What is the radius of the pipe at this point?

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