A Pump Uses a Piston of 15 Cm Diameter

Multiple Choice

A pump uses a piston of 15 cm diameter that moves at 2.0 cm/s as it pushes a fluid through a pipe. What is the speed of the fluid when it enters a portion of the pipe that is 3.0 mm in diameter? Treat the fluid as ideal and incompressible.

A) 6.0 cm/s
B) 50 cm/s
C) 22 cm/s
D) 51 cm/s