The radius of a circle is defined as a line segment that joins the center to the boundary of a circle. The length of the radius remains the same from the center to any point on the circumference of the circle. …

You don't have to choose which radius of a circle formula you need: simply input the measurement into the tool, and it will automatically process the radius of a circle equation tailored for your needs.

The plural form is radii (pronounced "ray-dee-eye"). In the figure above, drag the orange dot around and see that the radius is always constant at any point on the circle. Sometimes the word 'radius' is used …

The radius of the circle is the distance between the center of the circle and any point on its circumference. Learn the definition, formulas, examples, and more.

Use our calculator to calculate the radius of a circle given a diameter, circumference, or area. See the formulas used to find the radius.

Aug 1, 2025 · Use this circle calculator to find the area, circumference, radius or diameter of a circle. Given any one variable A, C, r or d of a circle you can calculate the other three unknowns. Units: …

Earth radius (denoted as R🜨 or RE) is the distance from the center of Earth to a point on or near its surface. Approximating the figure of Earth by an Earth spheroid (an oblate ellipsoid), the radius …

The meaning of RADIUS is a line segment extending from the center of a circle or sphere to the circumference or bounding surface. How to use radius in a sentence.

The radius (plural radii) of a circle is any line segment that has one endpoint on the center of the circle and the other endpoint on the circle's circumference.

Aug 3, 2023 · The radius of a circle is the distance from the center of the circle to any point on its circumference. It is half the length of the diameter of the circle. Shown below is the radius of the …