Definition of «radius»

The term radius refers to a straight line extending from the center of a circle or sphere to its perimeter. In mathematics, it is used as a measurement for the distance between two points on a circle or in three-dimensional space. It can also refer to an arm bone in the human body that extends from the shoulder to the elbow.

Usage examples

  1. The radius of a circle is the distance from the center to any point on its boundary.
  2. The radius of a sphere is measured as the distance between the center of the sphere and any point on its surface.
  3. In geometry, when calculating the area of a circle, the formula used is π multiplied by the radius squared.
  4. In architecture, the radius of a curvature refers to the extent to which a line or surface is curved.
  5. The radius of a car tire determines its size and can affect its performance on the road.
  6. In medicine, doctors measure the radius of a patient's pupils to assess their responsiveness to light.
  7. Radius is an important variable in determining the size and rotation of a hurricane or cyclone.
  8. When describing a satellite's coverage area, engineers often refer to its radius of operation.
  9. The concept of radius is also relevant in anatomy, particularly when discussing the bones of the forearm (radius and ulna).
  10. In a scientific experiment, researchers may vary the radius of a lens to examine its effect on focusing or magnification.

Sentences with «radius»

  • They are all within a 70 mile radius of where the formula is made. (grassfed.com)
  • Make it a habit to visit the bookstores and libraries within a 50 - mile radius of where you live. (wiseinkblog.com)
  • It has the smallest turning radius of any vehicle I have ever owned. (autolist.com)
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