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This page provides a list of educational videos related to 9.1 Circumference. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to 9.1 Circumference.
Circumference of a circle, 2πr, How to get the Formula
By mathematicsonline
A quick explanation on why the circumference of a circle is 2πr. Buy my app! https://itunes.apple.com/us/app/euclids-elements-book-1/id717831746?ls=1&mt=8
Circumference and Diameter of a Circle and Pi
By APUS07
YouTube presents Circumference and Diameter of a Circle and Pi, an educational video resource on math.
Circles: radius, diameter, circumference and Pi | Geometry | Khan Academy
By Khan Academy
The radius is the distance between the center and any point on the circumference of a circle. The diameter is always twice the radius. The circumference is the perimeter of the circle.