Water is flowing at the same velocity through two different pipes. One with a 4″ I.D. and one with a 2″ I.D. The flow rate through the 4″ I.D. pipe is ___ the flow rate in the 2″ I.D. pipe.

Water is flowing at the same velocity through two different pipes. One with a 4″ I.D. and one with a 2″ I.D. The flow rate through the 4″ I.D. pipe is ___ the flow rate in the 2″ I.D. pipe.