$$\lambda = \frac{v}{f}$$
where:
* λ is the wavelength in meters
* v is the speed of sound in meters per second
* f is the frequency of the sound wave in hertz
The speed of sound in air at room temperature is approximately 343 meters per second. So, the wavelength of a musical note with frequency 624 Hz is:
$$\lambda = \frac{343 \text{ m/s}}{624 \text{ Hz}} = 0.549 \text{ m}$$
Therefore, the wavelength of a musical note with frequency 624 Hz is approximately 0.549 meters.