Answer: 135.7 km
Step-by-step explanation:
distance = speed x time
where speed is the average speed of the train and time is the duration of the travel.
Substituting the given values, we get:
distance = 37.7 km/hr x 3.6 hrs
distance = 135.72 km
Rounding to the nearest tenths place, we get:
distance ≈ 135.7
Therefore, the high-speed train travels approximately 135.7 km.