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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

452.16
452.16

75.36
75.36

37.68
37.68

1 answer

The formula to find the circumference \( C \) of a circle is given by:

\[ C = 2\pi r \]

Where:

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

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

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

Calculating this step-by-step:

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

So, the approximate circumference of the circle is \( 75.36 \).

The correct response is:

75.36