In geometry, a diameter of a circle is any straight line segment that passes through the centre of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle.

Oct 22, 2025 · From clear definitions and real-life examples to FAQs and a quick quiz, explore everything you need to know about diameter in this guide.

Diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circumference of a circle. Learn how to find the diameter of a circle using radius, …

If you're wondering how to calculate the diameter of a circle, this diameter of a circle calculator is a perfect choice. You will need either the radius, the circumference, or the area of a given circle for the …

The diameter of a circle is the length of the line through the center and touching two points on its edge. In the figure above, drag the orange dots around and see that the diameter never changes.

The meaning of DIAMETER is a chord passing through the center of a figure or body. How to use diameter in a sentence.

Illustrated definition of Diameter: The distance from one point on a circle through the center to another point on the circle. It is also the...

The diameter of a circle is a line segment that passes through the center of the circle and has endpoints on the circle. Line segment AB above is a diameter for circle O since endpoints A and B lie on the …

Learn about diameter in Maths—definition, formulas, and solved examples. Quickly find diameter from radius, area, or circumference for exams and real-life use.

Earth has a diameter at the Equator of about 12,756 kilometers (7,926 miles), making it the fifth largest planet in the solar system. Earth’s mass is about 5.97 ⨉ 10 24 kilograms. Dividing this mass by …