This is what WolframAlpha says. Look at the image below.
Answer:
Am I missing something to this question?
As pictured, the answer is 12 7/9ths.
a. 60 degrees
b. 300 degrees
c. 12π
d. 2π
e. 10π
f. 36π
g. 6π
Answer: you failed unfortunately
Step-by-step explanation: