A thin stream of water flows smoothly from a faucet and falls straight down. At one point the water is flowing at a speed of v1 = 1.63 m/s.

A thin stream of water flows smoothly from a faucet and falls straight down. At one point the water is flowing at a speed of v1 = 1.63 m/s. At a lower point, the diameter of the stream has decreased by a factor of 0.913. What is the vertical distance h between these two points?