9514 1404 393
Answer:
 60 m
Step-by-step explanation:
The difference in height is the short leg of a right triangle with long leg 35 m and hypotenuse 37 m.
 (∆h)² + 35² = 37² . . . . . . . . . . the Pythagorean theorem
 (∆h)² = 1369 -1225 = 144
 ∆h = √144 = 12 . . . meters
The taller building is 48 m + 12 m = 60 m high.