Sewing A seamstress secures one end of a piece of thread to a spool. Then she uses an attachment on her sewing machine to cause the spool to spin around, which in turn causes the thread to wind around the spool. If the spool has a diameter of 1.6 cm and spins at a rate of 3 revolutions per second, what length of thread (in centimeters) is wound around the spool in 1 second?
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