Question

What is a radius
Answered by GPT 3.5
A radius is a straight line segment that extends from the center of a circle or sphere to any point on its circumference. It is half the length of the diameter and is commonly denoted by the lowercase letter "r". The radius helps determine the size, position, and properties of a circle or sphere. It is used in various mathematical calculations and formulas related to geometry, trigonometry, and physics.
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