### Lumos Video Store

## This page provides a list of educational videos related to Circumference and Diameter. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Circumference and Diameter.

# Circumference and Diameter of a Circle and Pi

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By APUS07

YouTube presents Circumference and Diameter of a Circle and Pi, an educational video resource on math.

**In this video**

# Circles: radius, diameter, circumference and Pi | Geometry | Khan Academy

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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.

**In this video**

# Radius, diameter, and circumference

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By Khan Academy

Learn how the number Pi allows us to relate the radius, diameter, and circumference of a circle.

**In this video**

# Circles - Area, Circumference, Radius & Diameter Explained!

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By The Organic Chemistry Tutor

This basic geometry video tutorial explains how to calculate the area and circumference of a circle given it's radius and diameter. This video contains a few examples with word problems. This video also explains how to calculate the circumference given the area, and how to calculate

**In this video**

# 10.1 The Circle (Lesson)

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By AutenMath

A lesson on circle basics: circle definition, chords, diameter, radius, circumference, area of a circle, interior of a circle, exterior of a circle

**In this video**

# Formula for Area of a Circle

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By Steven Ellis

This video shows that pi is equal to the ratio of the area of a circle to the area of a square when the radius of the circle equals the length of the side of the square. This is a view of pi other than the ratio of the circumference to the diameter.

**In this video**

# Area of a circle

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By Khan Academy

Learn how the number Pi allows us to relate the radius, diameter, and circumference of a circle.

**In this video**

# Circumference of a circle, 2πr, How to get the Formula

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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

**In this video**

# Writing The Equation Of A Circle In Standard Form

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By NotesCollegeAlgebra

How to write the equation for the standard form of a circle

**In this video**

# Basic information about circles

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By MathPlanetVideos

What's the angle of the circle arc if we divide a cicle in 12 equally sized pieces

**In this video**

# Advanced information about circles

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By MathPlanetVideos

Find the value of t in the figure

**In this video**

# 11.6 Areas of Circles, Sectors & Segments (Lesson)

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By AutenMath

A lesson on finding the area of circles, sectors and segments

**In this video**

# Finding the Center-Radius Form of a Circle by Completing the Square - Example 3

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By PatrickJMT

Youtube Presents Finding the Center-Radius Form of a Circle by Completing the Square - Example 3 an educational video resources on english language arts.

**In this video**

# cosine and sine values on the unit circle

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By David Metzler

Two quick, basic problems about cosine and sine values on the unit circle

**In this video**

# Finding the Center-Radius Form of a Circle by Completing the Square - Example 2

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By PatrickJMT

Youtube Presents Finding the Center-Radius Form of a Circle by Completing the Square - Example 2 an educational video resources on english language arts.

**In this video**

# Calculating the circumference of a circle

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By MathPlanetVideos

Find the radius of the circle

**In this video**

# Area of a Circle (equation derived)

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By Big Bang Physics

The equation for the area of a circle is derived with integration.

**In this video**

# The unit circle definition of trigonometric function

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By Khan Academy

This video lecture series from Khan Academy on Trigonometry includes Radians and Degrees, Using Trigonometric Functions, The Unit Circle definition of trigonometric function, Graph of the Sine Function, graphs of Trigonometric Functions, Trigonometric Identities, Law of Cosines, Law of Sines, Polar Coordinates and Trigonometric Word Problems..

**In this video**