Answer:
C. 8.66 in
Step-by-step explanation:
Using the formula of circumference of a circle
[tex]2\pi \: r [/tex]
then,
first find r by plagging in the given data.
so, r = 4.33 in
since it's diameter needed, then
r + r = d
4.33 in + 4.33 in = 8.66 in