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Now that WWE is coming to an end, Howard is building a wrestling arena in his backyard to nurture the new wrestling craze. If the diameter of his circular arena is 20 ft, how many feet of fencing does he need to make the border of the ring?

A 62.80 feet.

To find the length of the fence to circle the arena, you need to compute for its circumference. The formula for circumference is: C = π × diameter C = 3.14 × 20 = 62.8 feet TIP: For a quick estimate, you can use π = 3. In this problem, the answers given in the choices are quite far apart in value, so estimating will work fine. C = 3 × 20 = 60. The closest answer choice to 60 is 62.80 feet.

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