Solve for the distance between (522, 1322) and (9000, -1337) to the third decima?

If you plot those points on a graph, you see that the horizontal difference is 9000 - 522 = 8478 and the vertical difference is 1322 + 1337 = 2659 and the slant line makes a right triangle. So then we have the Pythagorean theorem: A^2 + B^2 = C^2

(8478)^2 + (2659)^2 = 78946765

√(78946765) = 8885.19921 <-- ANSWER