41 and 42, they are the same part, please specify decimals

Given:
The distance traveled by water wave is d = 6.6 m
The time duration is t = 1.69 s
The time period is T = 1.1 s
To find the speed of the water wave and the wavelength.
Explanation:
The wave speed can be calculated as
[tex]\begin{gathered} v=\frac{d}{t} \\ =\frac{6.6}{1.69} \\ =3.9\text{ m/s} \end{gathered}[/tex]The wavelength can be calculated as
[tex]\begin{gathered} \lambda=v\times T \\ =3.9\times1.1 \\ =4.29\text{ m} \end{gathered}[/tex]Thus, the wave speed is 3.9 m/s
The wavelength is 4.29 m