Diameter

Topic

Geometry Basics

Definition

The diameter of a circle is the longest distance across the circle, passing through the center.

Description

The diameter is twice the radius of a circle and is a fundamental concept in circle geometry. The formula for the diameter is d = 2r, where r is the radius. Understanding the diameter is crucial for solving problems related to the circumference and area of circles. For example, the circumference of a circle can be calculated using the formula C = πd. This concept is used in various real-world applications, such as engineering and design, to ensure precision and accuracy in circular objects.

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