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Circumference & Area of Circles Quick Check
1 of 51 of 5 Items
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

452.16
452.16

75.36
75.36

37.68
37.68

18.84
18.84

1 answer

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

\[ C = 2\pi r \]

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

Given that the radius \( r = 12 \):

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

Calculating that:

\[ C = 2 \times 3.14 \times 12 = 6.28 \times 12 = 75.36 \]

So the approximate circumference of the circle is 75.36.

The correct response is 75.36.