Final answer:
To compare the height of the Burj Khalifa with the Flatiron Building, subtract the height of the Flatiron Building from 829.8 meters, which is the height of the Burj Khalifa.
Step-by-step explanation:
If the Flatiron Building was on a graph that also included the Burj Khalifa, we would determine how much taller the Burj Khalifa is by comparing their heights. Unfortunately, the height of the Flatiron Building is not provided in your reference. However, we can use the given information to make a comparison.
The height of the Burj Khalifa is 829.8 meters. If the height of the Flatiron Building were known, we would subtract the height of the Flatiron Building from 829.8 meters to find out how much taller the Burj Khalifa is in comparison.