Which of the following uses the correct formula to find the approximate circumference of a circle that has a radius of 12? Use 3.14 for π

and express your answer to the hundredths place.(1 point)
Responses

18.84
18.84

75.36
75.36

452.16
452.16

37.68
37.68

1 answer

To find the approximate circumference of a circle, the formula used is:

\[ C = 2\pi r \]

where \( C \) is the circumference, \( \pi \) is approximately 3.14, and \( r \) is the radius of the circle.

Given that the radius \( r \) is 12, we can substitute the values into the formula:

\[ C = 2 \times 3.14 \times 12 \]

Now, calculating this:

  1. Calculate \( 2 \times 3.14 = 6.28 \)
  2. Then multiply by 12: \[ 6.28 \times 12 = 75.36 \]

So, the approximate circumference is 75.36.

Thus, the correct response is 75.36.