The circumference of a circle equals pi times the diameter. Using 3.14 to approximate pi, what is the approximate circumference in inches of a circle with a diameter of 12 in.

Question

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Answer 1

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

\[ C = \pi \times d \]

where \(C\) is the circumference and \(d\) is the diameter.

Given that the diameter \(d = 12\) inches and using the approximation \(\pi \approx 3.14\):

\[ C \approx 3.14 \times 12 \]

Calculating this:

\[ C \approx 3.14 \times 12 = 37.68 \]

So, the approximate circumference of the circle is 37.68 inches.