Answer:
10 units
Explanation:
The difference between the points is ...
z2 -z1 = (11 -11i) -(3 -5i) = (11 -3) +(-11 -(-5))i = 8 -6i
The magnitude of that difference is ...
d = √(8² +(-6)²) = √(64 +36) = √100 = 10
The distance between z1 and z2 is 10 units.