How far can you see to the horizon from an airplane at 9800 m?

The distance to the horizon from an airplane at 9,800 meters (about 32,000 feet) can be calculated using the formula (d \approx \sqrt{h} \times 3.57), where (d) is the distance in kilometers and (h) is the height in meters. Plugging in 9,800 meters, the horizon is approximately 195 kilometers away. This means that from this altitude, a person can see roughly 195 kilometers to the horizon, depending on visibility conditions.