It appears that the Pythagorean theorem can be applied to this problem (distance to shadow)² = (height of building)² + (length of shadow)² (38 m)² = (height of building)² + (28 m)² 660 m² = (height of building)² Then the height of the building is height of building = √660 m ≈ 25.7 m
The coordinated of A would be 1,1. Instead of going through the trouble of mentally moving the entire thing, just focus on the one you need to know the answer to, aka A.
