r = radius
Arc length = 2(3.14)r
7.9 cm = r
Plug our values in
Arc length = 2(3.14)(7.9 cm)
Arc length = 49.6 cm
Answer:

Step-by-step explanation:
X= -1 I believe is the correct answer. Correct me if I messed something up
The answer is D, you can guess and check in a calculator
We need a photo or something to answer. Brainliest please!