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The circumference A of a circle varies directly with its radius. A circle with a radius of 4 has a circumference of about 25.1 in.2. What would be the circumference of a circle with a radius of 9 in.?​

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User Jacouh
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The circumference is 56.54 to find the circumference do 2 times pi times radius
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User Nitish Dhar
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