Question

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

75.36
75.36

452.16
452.16

18.84
18.84

37.68

1 answer

The formula to calculate the circumference of a circle is given by:

\[ C = 2\pi r \]

where \( C \) is the circumference and \( r \) is the radius of the circle.

Given that the radius \( r = 12 \) and using \( \pi \approx 3.14 \), the calculation would be:

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

Calculating this step-by-step:

  1. \( 2 \times 3.14 = 6.28 \)
  2. \( 6.28 \times 12 = 75.36 \)

So, the approximate circumference of the circle is 75.36.

Thus, the correct response is 75.36.