In the figure the two speakers are producing identical sound waves. The solid lines represent constructive interference regions and the dashed lines represent destructive interference regions. The point labeled 4 is 421.75 m from the bottom speaker and 662.75 m from the top speaker.
What is the wavelength of the sound waves?
![190_speaker.png](https://secure.tutorsglobe.com/CMSImages/190_speaker.png)