$4\mathrm{.}1)$ A garden hose has an inside diameter of $12$ mm and is connected to a lawn sprinkler

that consists of an enclosure with $25$ holes. Each hole has a diameter of $0\mathrm{.}8$ mm $.$ The

water in the hose moves at $2\mathrm{.}0\frac{m}{s}.$ Determine the velocity of the water as it leaves the

sprinkler.