Answer:
50 times greater.
Step-by-step explanation:
Basically, all you have to do here is to divide 5*10^22 m by 1*10^21 m:
5*10^22 m
----------------- = 5*10^1, or 5*10, or 50.
1*10^21 m
The diameter of the IC 1101 is about 50 times greater than the diameter of the Milky Way.
