As we know that speed of sound is
[tex]v = 330 m/s[/tex]
frequency of sound is
[tex]f= 1320 Hz[/tex]
now we know that frequency of sound and speed of sound is related to each other by the following formula
[tex]speed = frequency * wavelength[/tex]
[tex]v = \lambda * f[/tex]
[tex]330 = 1320 * \lambda[/tex]
[tex]\lambda = 0.25 m[/tex]
so wavelength of sound is 25 cm or 0.25 m