Answer:

Step-by-step explanation:
An arc measure of 20 degrees corresponds to a central angle of 20 degrees.
Area of sector of circle

where n = central angle of circle, and r = radius



Answer:
-31/30
Step-by-step explanation:
-3/5 - 7/10 + 4/15 = -31/30
I believe that the answer is C.
Reflection, i am guessing