The height of the building is 63m
Data;
To solve this problem, we have to use Pythagorean theorem to find the missing side.
[tex]hypothenuse^2 = adjacent^2 + opposite^2[/tex]
Let's substitute the values and solve
[tex]65^2 = 16^2 + x^2 \\x^2 = 65^2 - 16^2 \\x^2 = 3969\\x = \sqrt{3969} \\x = 63[/tex]
The height of the building is 63m
Learn more on Pythagoras's theorem here;
https://brainly.com/question/343682