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Area of a Circle

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.

Area of a Circle

by CK-12 //basic

Calculate the area of a circle.

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Area of a Circle

Learn to find areas of circles given the radius or the diameter.

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Area of a Circle

Learn how to find the area of a circle.

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Area of Circles

Learn to calculate the area of circles and the area of sectors of circles.

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Area of a Circle

This concept teaches students how to calculate the area of a circle.

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Area of a Circle

Find the area of a circle given the radius or the diameter. EngageNY has been used for a portion of this content.

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Area of Circles

by Kelly O'Brien //basic

Calculate the area of circles and the area of sectors of circles by using given information and formulas.

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Area of a Circle

Find the area of a circle given its radius or diameter.

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• PLIX

Examing Circles: Area of a Circle

Area of a Circle Interactive

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• PLIX

Area of a Circle: Hula Hoop Radius

Area of a Circle Interactive

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• PLIX

Area of a Circle: Campsite

Area of a Circle Interactive

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• Video

Determine the Area of a Circle

by CK-12 //basic

Provides an example of how to determine the area of a circle when given the diameter.

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• Video

Area of a Circle Principles - Basic

by CK-12 //basic

This video provides the student with a walkthrough on finding the area of a circle.

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• Video

Area of a Circle Examples - Basic

by CK-12 //basic

This video provides the student with a walkthrough of one or more examples from the concept "Area of a Circle".

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• Video

Area of a Circle Principles

This video gives more detail about the mathematical principles presented in Area of a Circle.

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• Video

Area of a Circle Examples

This video shows how to work step-by-step through one or more of the examples in Area of a Circle.

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• Video

Area of a Circle

by CK-12 //basic

Learn to calculate the area of a circle.

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• Video

Area of a Circle - Overview

by CK-12 //basic

Overview

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• Video

Area of a Circle: Candy Example

by CK-12 //basic

Learn how to find the area of a circle using an example with candy.

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• Video

Area of a Circle - Example 1

by CK-12 //basic

Find area given radius or diameter

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• Video

Area of a Circle - Example 2

by CK-12 //basic

Area of Semi- and Quarter circle

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• Video

Area of a Circle - Example 3

by CK-12 //basic

Find radius or diameter given area

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• Practice
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Area of a Circle Practice

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• Critical Thinking

Area of a Circle Discussion Questions

A list of student-submitted discussion questions for Area of a Circle.

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Area of a Circle Post Read

To activate prior knowledge, to generate questions about a given topic, and to organize knowledge using a KWL Chart.

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Area of a Circle Pre Read

To activate prior knowledge, to generate questions about a given topic, and to organize knowledge using a KWL Chart.

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Area of a Circle KWL Chart

With this KWL Chart, reflect on your prior knowledge of a concept, come up with questions you’re curious about, and come up with answers from the reading.

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Area of Circles

Connect your daily life experiences with specific points in a reading using a Double Entry Diary.

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Find the Area of a Circle Given Radius or Diameter Post Read

Develop understanding of concepts by studying them in a relational manner. Analyze and refine the concept by summarizing the main idea, creating visual aids, and generating questions and comments using a Four Square Concept Matrix.

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• Real World Application

Ringside Seats

Discover why sports venues are circular.

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• Study Guide

Circumference and Arc Length Study Guide

An overview of the formulas for circumference, arc length, sectors, and segments of circles is presented in this study guide.

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Interactive Area of a Circle

by CK-12 //basic

In this interactive you can see how changing the size of a circle affects its area.

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How Did They Come Up with the Formula for the Area of a Circle?

by CK-12 //basic

This labelled graphic helps us to understand one way of deriving the formula for the area of a circle.

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The Circle

by Kyle Bardman //basic

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• Flashcards

Perimeter and Area of Circles and Circle Parts Flashcards

by CK-12 //basic

These flashcards help you study important terms and vocabulary from Circumference, Arc Length, Area of a Circle, and Area of Sectors and Segments.

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• Flashcards

Area of a Circle

by Ellaine Chou //basic

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• Flashcards

Area of Circles

by Ellaine Chou //basic

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• Flashcards

Calculating Circles' Measurements

by Galaxy Portillo //basic