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# Diameter or Radius of a Circle Given Circumference

## C = πd; C = 2πr

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
• Read

## Circumference of Circles

by CK-12 //at grade
Learn to find the diameter, radius and circumference of circles.
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• Read

## Circumference of Circles (B-2, B-3, C-2)

by LISD Secondary Math //basic
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• Read

## Diameter or Radius of a Circle Given Circumference

by Christopher King //at grade
Find the diameter or radius of a circle given the circumference
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0
• Read

## Diameter or Radius of a Circle Given Circumference

by MCPS Math //at grade
Find the diameter or radius of a circle given its circumference.
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0
• Read

## Diameter or Radius of a Circle Given Circumference

by CK-12 //at grade
Learn to find the diameter and radius of a circle when you are given the circumference.
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0
• Read

## Diameter or Radius of a Circle Given Circumference

by CK-12 //at grade
Learn to find the diameter or radius of a circle given the circumference.
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0
• Read

## Circumference of Circles

by Conrad Brassard //at grade
Learn to find the diameter, radius and circumference of circles.
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• PLIX

## Diameter or Radius of a Circle Given Circumference

by CK-12 //at grade
Diameter or Radius of a Circle Given Circumference Interactive
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• Video

## Circumference of a Circle

by CK-12 //basic
Learn how to find the circumference of a circle.
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3
• Video

## Determine the Circumference of a Circle

by CK-12 //basic
Provides two examples of determining the circumference of a circle. One example looks at when the length of the diameter is given, and the other looks at when the length of the radius is given.
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• Video

## Circles: Radius, Diameter and Circumference

by CK-12 //basic
Introduces the properties and components of circles.
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• 2
• Real World Application

## Watering Rounds

by CK-12 //at grade
Discover the geometry behind center-pivot irrigation, a technique farmers use to water crops.
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• Real World Application

## Put the Pedal to the Metal

by CK-12 //at grade
Find out how gear ratios impact the speed of your car.
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• Link

## The Circle

by Kyle Bardman //basic
This link will help you better understand middle school math.
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• Flashcards

## Diameter or Radius of a Circle Given Circumference

by Ellaine Chou //basic
These flashcards are here to help you better understand 6th grade math.
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• Flashcards

## Circumference of Circles

by Ellaine Chou //basic
These flashcards are here to help you better understand 8th grade math.
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• Flashcards

## Calculating Circles' Measurements

by Galaxy Portillo //basic
This will help you better understand 7th grade math.
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