Answer: 14.82 cm
The speed
of a wave (the sound in this case) is given by the following formula:
(1)
Where:
is the frequency
the wavelength
It is known that the speed of sound in water at
is:

So, we only have to find
from (1):
(2)
Knowing
:
But we were asked to find the wavelength in cm and we have to make the conversion:

Hence:
