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Diameter = 2 x Radius
Circumference = π x Diameter= π x (2 x Radius)
28.5 = π x 2R
28.5 / π = 2R
28.5/3.14159 = 2R = 9.0718 OR 9.1
Radius = 9.1/2 = 4.5 inches.
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∙ 10y ago
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