87/62 = 1 and 25/62 (simplest form)
Answer:

Step-by-step explanation:
From the given figure it is clear that the stop board is a regular hexagon and ∠I is an exterior angle of the regular hexagon.
Exterior angle of a regular polygon with n sides 
In a regular hexagon number of sides: n =6
Exterior angle of a regular hexagon 
Since ∠I is an exterior angle of the regular hexagon, therefore,
.
0.05 is the least among 0.5, 0.05, and 0.625
Hope that helps :)
-5.6(repeating 6), -√(21), 3&9/10, 5.2