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Learn the definitions and formulas of radius, diameter, and circumference of a circle, and how they relate to the number pi. See examples, practice problems, and tips on finding arc length of a semicircle.
Learn what is radius, how to find it using formulas, and how to draw a circle with radius. Explore the radius of a circle and a sphere with examples and diagrams.
3 days ago · Find the radius of a circle from the circumference, area, or diameter using simple formulas. Use the online tool to input any measurement and get the radius of a circle instantly.
Learn the meaning of radius as a line segment, a bone, a vein, a length, an area, or a part. See examples, synonyms, etymology, and related words for radius.
Learn the meaning of radius as a geometric term, a distance measure and a bone name. Find out how to use radius in sentences and how to say it in different languages.
Learn what is the radius of a circle, how to calculate it from diameter, circumference or area, and use the interactive tool to explore it. Find related topics and formulas for circles and arcs.
Learn the meaning of radius as a distance from a central point or a bone in the lower arm. See how to use radius in geometry, anatomy and other contexts with examples and translations.
