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The distance across a circle through the center is called the diameter.

Diameter - Wikipedia

en.wikipedia.org/wiki/Diameter

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

Radius, diameter, & circumference | Area and circumference of ...

www.khanacademy.org/math/basic-geo/basic-geo-area-and-perimeter/area-circumference-circle/a/radius-diameter-circumference

Learn the relationship between the radius, diameter, and circumference of a circle.

How to Calculate the Diameter of a Circle (with Cheat Sheet)

www.wikihow.com/Calculate-the-Diameter-of-a-Circle

How to Calculate the Diameter of a Circle. Calculating a circle's diameter is easy if you know any of the other dimensions of the circle: the radius, the ...

Diameter - math word definition - Math Open Reference

www.mathopenref.com/diameter.html

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  ...

Circumference of a Circle - Math Goodies

www.mathgoodies.com/lessons/vol2/circumference.html

The distance across a circle through the center is called the diameter. Pi is the ratio of the circumference of a circle to the diameter. Thus, for any circle, if you ...

How Do You Find the Diameter of a Circle if You Know its Radius ...

www.virtualnerd.com/geometry/circles/tangent-lines/example-circle-radius-diameter

Note: When you know the radius of a circle, you can find the diameter of that circle with a simple multiplication problem! Follow along with this tutorial to learn  ...

Diameter Of A Circle - Math A Tube

www.mathatube.com/geometry-diameter-of-a-circle.html

The diameter of a circle can be foumd by the following formula d = 2r or d = 2 x radius. Video on how to find the diameter of a circle.

www.ask.com/youtube?q=What Is the Diameter of a Circle?&v=mEqUcfDC5rM
Apr 6, 2011 ... A how to video on How To Determine The Diameter Of A Circle that will improve your math skills. Learn how to get good at math from ...

Circle - Math is Fun

www.mathsisfun.com/geometry/circle.html

circle. A circle is easy to make: Draw a curve that is "radius" away from a central point. And so: ... radius diameter circumference: circle/diameter = pi = 3.14159.