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## Area of a circle

en.wikipedia.org/wiki/Area_of_a_circle

In geometry, the area enclosed by a circle of radius r is πr<sup>2</sup>. Here the Greek letter π represents a constant, approximately equal to 3.14159, which is equal to the ...

## Area of a Circle - Math Goodies

www.mathgoodies.com/lessons/vol2/circle_area.html

Area of a circle is presented in this interactive lesson from Math Goodies.

## Area of a circle | Area and circumference of circles | Area and ...

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

## Area of a Circle - Math is Fun

www.mathsisfun.com/geometry/circle-area.html

Area of a Circle. Calculator Enter the radius, diameter, circumference or area of a Circle to find the other three. The calculations are done "live":.

## How to Calculate the Area of a Circle (with Examples) - wikiHow

www.wikihow.com/Calculate-the-Area-of-a-Circle

How to Calculate the Area of a Circle. Follow these steps to find the area of a circle. You will also learn how to find the area of a sector, which is a slice of a circle, ...

## Find the area of a circle - LearnZillion

learnzillion.com/lesson_plans/9068-find-the-area-of-a-circle

In this lesson you will learn to find the area of a circle by exploring the relationship between a circle and a rectangle.

Nov 8, 2009 ... Area of a circle and how it relates to radius and diameter.

## Area of a Circle - AAA Math

www.aaamath.com/exp612x2.htm

An interactive math lesson to teach the finding the area of a circle.

## Math Video - Area of a Circle - Math Playground

www.mathplayground.com/mv_area_circles.html

Math video teaches students how to find the area of a circle.

## BBC - GCSE Bitesize: Area of a circle

www.bbc.co.uk/schools/gcsebitesize/maths/geometry/circlesrev3.shtml

A secondary school revision resource for GCSE Maths about higher level shapes and circles.

The formula for finding the area of a circle is A=(pi)R^2.
R is the radius of the circle.

### Area of a circle | Area and circumference of circles | Khan Academy

In this example, we solve for the area of a circle when given the diameter. If you recall, the diameter is the length of a line that runs across the circle and through ...

### Area of circle, formula and illustrated lesson: how to calculate the ...

www.mathwarehouse.com

Area of a circle, formula for area explained with examples, pictures, interactive examples and quiz.

### How Do You Find the Area of a Circle if You Know the Radius ...

www.virtualnerd.com

Note: If you know the radius of a circle, you can use it to find the area of that circle . Just plug that value into the formula for the area of a circle and solve.