P.5 Why does it work?

Pythagorean Theorem

Which plane is closer to the base of the airport tower?

Kaden's "Distance Formula"Method
If I make a graph, I see the base of the tower is at (0, 0) and Plane A is at
(16,000, 20,000).
I can use the distance formula to find the distance from Plane A to the tower.
I can also find the distance from Plane B at (23,000, 8,000) to the tower.
Plane B is closer.
25,612 > 24,351