When tasked with finding the diameter (d) of a circle, one needs to use the relationship between the circumference (C) and the diameter (d). The formula that connects these two measurements is:
[tex]\[ C = \pi d \][/tex]
To solve for the diameter, we rearrange the formula to solve for d:
[tex]\[ d = \frac{C}{\pi} \][/tex]
Among the given choices, the formula that correctly finds the diameter from the circumference is:
[tex]\[ \frac{C}{\pi} \][/tex]
This is the third choice in your list. Therefore, the correct formula to use is:
[tex]\[ \frac{C}{\pi} \][/tex]
This choice is the correct rule for finding the diameter of a circle.
