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How to Find the Diameter of a Circle?

Answer

You can find out the diameter of a circle if you know it's circumference or radius. Then, you'd plug that information into the formula needed. If you know the radius, just multiply that by 2. If you have the circumference, you'd need to divide it by
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Q&A Related to "How to Find the Diameter of a Circle?"
1. Wrap a measuring tape around the circumference of the globe. Line the tape up evenly with the equator, or exact middle, of the globe. 2. Write down the number of inches shown on
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Formulas for a circle: Radius: r Diameter: d Circumference: C Area: A d = 2r C = 2 Pi r = Pi d A = Pi r² = Pi d²/4 C = 2 sqrt(Pi A) A = C²/4 Pi = Cr/2 http://mathforum.org
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