Question

Y'all are going to hate me lol, ii swear this the last math one

Answer 1

29

Explanation:

Answer 2

The Pythagorean Theorem is: c²= a²+b²

c²= 20²+21²

c²=400+441

c²=841

c=√841

c=29

∴The length of the missing side is 29ft.