18. [-/2 Points] DETAILS OBINPHYS8 4.P.035. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHI Air flows through a heating duct with a square cross-section with 5-inch sides at a speed of 4.3 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 11 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. ft/s Need Help? Read It Watch It