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Diameter - Wikipedia
Diameter of a Circle (Definition, Formulas, Properties & Examples) …
Diameter of a Circle - Definition, Examples | Diameter Formula
Circle Facts – Area, Circumference, Diameter, Radius
Circle - Math is Fun
3 Ways to Calculate the Diameter of a Circle - wikiHow
Explore Circles: Understanding Radius, Diameter, and Properties …
Diameter - Geometry - AllMath
Diameter of a circle definition and calculator- Math Open Reference
Circles | Brilliant Math & Science Wiki