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Area = pi * radius2

628mm2 = 3.14 * radius2

dividing by pi (approximately 3.14)

200mm2 = radius2

Taking the square root of 200, 14.14mm is the radius.

The diameter is twice the radius, so the diameter is 28.28mm.

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โˆ™ 2009-11-23 17:03:36
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