The radius of a circle is 6 kilometers. What is the circle's circumference?
Use 3.14 for $\pi$.
kilometers
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Final Answer: The circumference of the circle is $\boxed{37.68}$ kilometers.

Steps

Step 1 ：The radius of a circle is given as 6 kilometers.

Step 2 ：We use the formula for the circumference of a circle, which is $2\pi r$, where $r$ is the radius of the circle.

Step 3 ：Substitute the given radius into the formula: $2\pi \times 6$.

Step 4 ：Calculate the circumference: $2\times 3.14 \times 6 = 37.68$ kilometers.

Step 5 ：Final Answer: The circumference of the circle is $\boxed{37.68}$ kilometers.