Jul 23, 2025 · To calculate the diameter of a circle we use the formula D = 2r. The diameter of any circle is the longest chord of the circle, that passes through the centre of the circle.

How do you find the radius and diameter of a circle? To calculate the radius of a circle, divide its circumference by 2π; for the circle's diameter, divide the circumference by π.

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 …

Oct 22, 2025 · The diameter of a circle is the straight distance from one side to the other through the center of the circle. In other words, the diameter shows how wide the circle is, but only …

Apr 15, 2025 · Need to find the diameter of a circle? Calculating diameter is easy—you just need the radius, the circumference, or the area. Even if you don't have any of those dimensions, …

Aug 1, 2025 · Use this circle calculator to find the area, circumference, radius or diameter of a circle. Given any one variable A, C, r or d of a circle you can calculate the other three …

Aug 3, 2023 · The diameter of a circle is the line segment that passes through the center of the circle and has its two endpoints on the circle. It is the longest distance from one end of the …