First I think you need to find the angle of the sector. Since it is one hour, and a clock has 12 hours, you would divide 360 by 12 to get 30. then you would do this:
(30/360)(2)(pi)(16)
you would get 8.37758041
Im not sure but its most likely 29a/20 because you cant simplify any more than what it already is because of the numbers that your dealing with so if your asking why its not able to be simplified its that reason plus there is a "a" in the fraction as well.
Answer:
0.53
Step-by-step explanation:
If you want to make it simpler you can simplify it.
To make our lives more simpler lets use that route.
Now you would divide:
0.53...
So, 0.53
Hope this helped!