Answer:
Option A: c/12 is the correct answer.
Step-by-step explanation:
Given that:
We use C to represent the circumference of a circle and in the formula
C = πd
Diameter of circle is 12 inches.
Putting d = 12 in the given formula
c = 12π
Dividing both sides by 12
[tex]\frac{c}{12}=\frac{12 \pi}{12}\\\pi = \frac{c}{12}[/tex]
Hence,
Option A: c/12 is the correct answer.