Answer:

The speed of sound in air is given by the formula:

```

v = √(γP/ρ)

```

where:

* v is the speed of sound, in meters per second

* γ is the ratio of the specific heats of air, which is approximately 1.4

* P is the pressure, in pascals

* ρ is the density, in kilograms per cubic meter

In this case, we have:

* γ = 1.4

* P = 1.013 × 105 Pa

* ρ = 1.168 kg/m3

So, the speed of sound in air at 25 °C is:

```

v = √(1.4 × 1.013 × 105 Pa / 1.168 kg/m3) = 343 m/s

```

This is the same as the speed of sound in air at STP (standard temperature and pressure).