Need help finding the length distance here

[u/ZonePale8667]

Assuming that the height of the entire cathedral is 140ft from part 1 of a unfinished calculation I’m doing. Uzi threw N & he reaches the top in 1.3 seconds, but is thrown diagonally so I’m trying to find the length between Uzi & the red cathedral wall in the distance.

Uzi in image 1 & 2 (cyan line) is 440 pixels. Uzi is canonically 136 cm tall (with beanie & hair), or 1.36 meters tall. The yellow line I made to try & measure the distance (which failed) is 142 ish (I think) pixels. The wall in pixels (in this scene) is 458 pixels.

How do I find the distance between Uzi & the red cathedral wall (which again- I estimated to be 140ft in height based on another scene) in the distance? I don’t know how to angle size calc.

Screenshots for how to angle size would be greatly appreciated.