Two in-phase loudspeakers, which emit sound in all directions,are sitting side by side. One of them is moved sideways by 3.0 m,then forward by 7.0 m. Afterward, constructive interference isobserved 14, 12, and 34 the distance between the speakers along theline that joins them, and at no other positions along thisline.
What is the maximum possible wavelength of the sound waves?
Express your answer with the appropriate units.