The speed of sound is 343 m/s343 \text{ m/s}343 m/s. What is this in km/h\text{km/h}km/h?
1,234.8 km/h1,234.8 \text{ km/h}1,234.8 km/h
123.48 km/h123.48 \text{ km/h}123.48 km/h
343 km/h343 \text{ km/h}343 km/h
1,000 km/h1,000 \text{ km/h}1,000 km/h