Diameter
A chord that passes through the center of a circle
Diameter is a geometric term that refers to the length of a straight line segment that passes through the center of a circle or sphere. It is the longest chord of the circle or sphere, which means it runs from one side to the other and passes through the center point.
When finding the diameter of a circle, you can use the formula:
d = 2r
where ‘d’ represents the diameter, and ‘r’ represents the radius of the circle or sphere. The radius, in turn, is half of the diameter. This means that, mathematically, the diameter is equal to two times the radius.
Knowing the diameter of a circle or sphere is useful in many applications. For example, it is crucial in geometry for finding the circumference, area, and volume of these shapes. In engineering, it can help in the design of pipes, cables, and other circular devices or structures.
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