What is the wavelength of the sound?

Question

A sound having a frequency of 299 Hz travels through air at 393 m/s.

What is the wavelength of the sound?

Answer in units of m.

Answer 1

Wave speed v = λ f, so wavelength λ = c/f = (393 m/s) / (299 s^-1) = 1.31 m.

>> In case 393 is a typo, because it's usually 343 m/s at normal temperatures, the answer is 343/299 = 1.15 m.