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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 - Wikipedia


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 | Area and perimeter (video) | Khan Academy


The area of a circle is pi times the radius squared (A = π r²). Learn how to use this formula to find the area of a circle when given the diameter.

Area of a circle (practice) | Khan Academy


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

Area of a Circle - Math Goodies


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

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


Note: If you have the diameter 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.

Area of a Circle - Math is Fun


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":.

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


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

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


How to Calculate the Area of a Circle. This wikiHow will teach you how to find the area of a circle. It will also show you how to find the area of a sector, which is a ...

www.ask.com/youtube?q=Area of a Circle&v=89O0rcCKVSY
Jan 18, 2016 ... Need a custom math course? Visit http://www.MathHelp.com. This lesson covers the area of a circle. Students learn that the formula for the area ...