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# Area of a Circle

## Pi times the radius squared.

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

## Area of a Circle

by CK-12 //at grade

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

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• Read

## Area of a Circle

by CK-12 //at grade

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

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• Read

## Area of a Circle

by CK-12 //at grade

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

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• Read

## Area of Circles

by CK-12 //at grade

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

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• PLIX

## Examing Circles: Area of a Circle

by CK-12 //at grade

Area of a Circle Interactive

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• PLIX

## Area of a Circle: Hula Hoop Radius

by CK-12 //at grade

Area of a Circle Interactive

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• PLIX

## Area of a Circle: Campsite

by CK-12 //at grade

Area of a Circle Interactive

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• Video

## Area of a Circle Principles

by CK-12 //at grade

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

by CK-12 //at grade

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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• Practice
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## Area of a Circle Practice

by CK-12 //at grade
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• Critical Thinking

## Area of a Circle Discussion Questions

by CK-12 //at grade

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

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• Post Read

## Area of a Circle Post Read

by CK-12 //at grade

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

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• Pre Read

## Area of a Circle Pre Read

by CK-12 //at grade

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

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• While Read

## Area of a Circle Ask, Answer, Learn

by CK-12 //at grade

Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.

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• Pre and Post Read

## Area of a Circle KWL Chart

by CK-12 //at grade

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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• While Read

## Area of Circles

by CK-12 //at grade

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

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• Post Read

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

by CK-12 //at grade

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

by CK-12 //at grade

Discover why sports venues are circular.

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• Study Guide

## Circumference and Arc Length Study Guide

by CK-12 //at grade

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

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