Answer;
λ = v/f;
Where; λ is the wavelength, v is the speed of the wave and f is the frequency of the wave.
Step-by-step explanation;
Wavelength is the distance between two successful crests or troughs in a transverse wave, or the distance between two successful rarefactions or compressions in a longitudinal wave. It is given in Meters.
It is calculated by dividing the speed of the wave by the frequency of the wave.