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The circle formed by this ring has a diameter of 16.5 mm. What is the circumference of the ring

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Answer:

51.8 mm^2

Explanation:

We know the formula for diameter is d = 2r.

Let's solve for r:

r = d/2 = 16.5 mm / 2 = 8.25 mm

We also know the formula for circumference which is
c = 2\pi r.

Plugging in our known radius:


c = 2\pi (8.25 mm) = 16.5\pi mm^(2) which is about 51.8 mm^2.

User Martin Grey
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