One meter is 3.28 feet, so anything shorter than that. A basketball, maybe a very young child?
This is what i got when i worked it out
The angle of rotation is the minimum angle in which you rotate a regular polygon such that the figure appears unchanged. The formula for that is dividing one angle of revolution by its number of sides.
Angle of Rotation = 360°/n
Angle of Rotation = 360°/72 = 5°
-3f is the temperature at 9am because -12f is colder than -3f