mathleaks.com mathleaks.com Start chapters home Start History history History expand_more Community
Community expand_more
menu_open Close
{{ filterOption.label }}
{{ item.displayTitle }}
{{ item.subject.displayTitle }}
arrow_forward
No results
{{ searchError }}
search
Expand menu menu_open home
{{ courseTrack.displayTitle }}
{{ statistics.percent }}% Sign in to view progress
{{ printedBook.courseTrack.name }} {{ printedBook.name }}
search Use offline Tools apps
Login account_circle menu_open
article Article
menu_book Textbook Solutions
school eCourses
question_answer Community
description Worksheets
calculate Math Solver
arrow_back arrow_forward

Concept

Circle

A circle is the set of all the points in a plane that are equidistant from a given point. There are a few particularly notable features of a circle.
  • Center - The given point from which all points of the circle are equidistant. Circles are often named by their center point.
  • Radius - A segment that connects the center and any point on the circle. Its length is usually represented algebraically by
  • Diameter - A segment whose endpoints are on the circle and passes through the center. Its length is usually represented algebraically by
  • Circumference - The perimeter of a circle, usually represented algebraically by
In the applet, the center is labeled Therefore, the circle can be referred to as or circle
parts of a circle
In any given circle, the lengths of any radius and any diameter are constant. They are called the radius and the diameter of the circle, respectively. To find the circumference and the area of a circle with radius their respective formulas are used.
Formulas for a Circle With Radius
Diameter
Circumference
Area

{{ 'ml-article-textbook-solutions-heading' | message }}

{{ 'ml-article-textbook-solutions-description' | message }}

{{ 'ml-article-textbook-solutions-expert-solutions' | message }}

{{ 'ml-article-textbook-solutions-math-solver-scanner' | message }}

{{ 'ml-article-textbook-solutions-answers-hints-steps' | message }}

{{ 'ml-article-ecourses-heading' | message }}

{{ 'ml-article-ecourses-description' | message }}

{{ 'ml-article-ecourses-interactive' | message }}

{{ 'ml-article-ecourses-chapter-tests' | message }}

{{ 'ml-article-ecourses-exercise-levels' | message }}

{{ 'ml-article-ecourses-rank-stats' | message }}

{{ 'ml-article-ecourses-video-lessons' | message }}

{{ 'ml-article-ecourses-course-theory' | message }}

{{ 'ml-article-ecourses-join-classroom' | message }}

{{ 'ml-article-ecourses-graphing-calculator' | message }}

{{ 'ml-article-ecourses-quiz-games' | message }}

{{ 'ml-article-ecourses-study-together' | message }}

{{ 'ml-article-community-heading' | message }}

{{ 'ml-article-community-description' | message }}

{{ 'ml-article-community-create-and-share-channels' | message }}

{{ 'ml-article-community-share-content-and-challenge' | message }}

{{ 'ml-article-community-cooperate-with-friends' | message }}

{{ 'ml-article-worksheets-heading' | message }}

{{ 'ml-article-worksheets-description' | message }}

{{ 'ml-article-worksheets-course1' | message }}

{{ 'ml-article-worksheets-course2' | message }}

{{ 'ml-article-worksheets-course3' | message }}

{{ 'ml-article-worksheets-course4' | message }}

{{ 'ml-article-math-solver-heading' | message }}

{{ 'ml-article-math-solver-description' | message }}

{{ 'ml-article-math-solver-photo-scan-solve' | message }}

{{ 'ml-article-math-solver-step-by-step' | message }}

{{ 'ml-article-math-solver-graph-math-problem' | message }}