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

452.16
452.16

75.36
75.36

37.68
37.68

18.84

1 answer

To find the circumference of a circle, you can use the formula:

\[ C = 2 \pi r \]

Where:

  • \( C \) = circumference
  • \( \pi \) is approximately 3.14
  • \( r \) is the radius of the circle

Given a radius \( r = 12 \), we can substitute the values:

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

Calculating it step-by-step:

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

Thus, the approximate circumference of the circle is 75.36.

So, the correct response is 75.36.