Which of the following uses the correct formula to find the approximate circumference of a circle that has radius of 12? Use 3.14 for pi and express your answer to the hundreths place.

A. 18.84
B.75.36
C. 37.68
D. 452.16

C. 37.68

The formula to find the circumference of a circle is 2*pi*radius.

So, applying the values given:

2 * 3.14 * 12 = 37.68

Therefore, the correct answer is 37.68.