To determine which is longer between 4,000 feet and 1 kilometer, we need to convert both measurements to the same unit. Let’s convert 1 kilometer to feet.
1 kilometer is equal to 3,280.84 feet. Now, compare this to 4,000 feet.
Since 4,000 feet is greater than 3,280.84 feet, 4,000 feet is longer than 1 kilometer.
In summary, 4,000 feet is longer than 1 kilometer.