The circumference of a circle with a 4 in radius is B) 8π.
<h3>What are the circumference and diameter of a circle?</h3>
The circumference of a circle is the distance around the circle which is 2πr.
The diameter of a circle is the largest chord that passes through the center of a circle it is 2r.
Given, One of a tree's rings has a diameter of 8 in.
We know the radius(r) is half of the diameter.
∴ Radius = (8/2) = 4 in.
Now, the circumference of a circle with a 4 in radius is 2π×4 = 8π.
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