Air flows through a heating duct with a square cross-section with 5-inch sides at a speed of 5.3 ft/s. Just before reaching an outlet in the floor of a room, the duct widens to assume a square cross- section with sides equal to 14 inches. Compute the speed of the air flowing into the room (in ft/s), assuming that we can treat the air as an incompressible fluid. i.. .....: X ft/s Enter a number. Need Help? Read It