IM GIVING 20 POINTS. help me please. it would be very helpful

Answer:
Step-by-step explanation:
Use Pythagoras’s theorem
36^2 + 15^2 = xz^2
xz = 39
Answer:
39km
Step-by-step explanation:
In triangle XYZ, XY = 15km and YZ = 36km.
We need to find XZ.
So here Pythagoras theorem can be used, according to which
h² = b² + a²
h² = 36² + 15²
h² = 1296 + 225
h² = 1521
h = √1521
h = 39