Answer:
365 meters/second
Step-by-step explanation:
The speed of sound in air (v, in meters/second) is computed as function of temperature (T, in Celsius) by the following formula:
v = 331.4 + 0.6*T
Replacing with T = 56 °C we get:
v = 331.4 + 0.6*(56) = 365 meters/second