The speed of the sound in air can be found using the following formula:
[tex]\begin{gathered} v=331\cdot\sqrt[]{\frac{T}{273K}} \\ so\colon \\ for \\ T=323.4K \\ v=331\cdot\sqrt[]{\frac{323.4K}{273K}} \\ v\approx360.26\frac{m}{s} \end{gathered}[/tex]Answer:
360.26 m/s