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The formula for the area of a circle is pi multiplied by the radius of the circle squared. The radius of the circle is the length of a straight line stretching from the center of t...

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

Area of a disk


The area of a disk, more commonly called the area of a circle, of radius r is equal to πr<sup>2</sup>. Here the symbol π (Greek letter pi) denotes the constant ratio of the ...

Area of a Circle - Math Goodies


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

You have a cut that goes from the center out to the edge in both directions, and it is important that it does come from the center of the circle. We are going to use 45 degrees as the angle of the cut of the slice and we want to know what angle do I need to cut the sma... More »

Area of a circle | Circumference and area 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 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": ...

The Area of a Circle and the Value of Pi | WIRED


Mar 14, 2015 ... How do you find the area of a circle? Can you measure the area of a circle and use that to find a value for Pi?

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.

Area of a Circle - AAA Math


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

Popular Q&A
Q: How to Calculate Area of a Circle.
A: 1. Find the circle's diameter, which is the length of a straight line through the circle's center. 2. Divide the diameter in half. This provides you with the ra... Read More »
Source: www.ehow.com
Q: How to Determine the Area of a Circle.
A: 1. Measure or obtain elsewhere the radius of a circle. If you know the circle diameter, divide the value by two to compute the radius. 2. Retrieve the mathemati... Read More »
Source: www.ehow.com
Q: Area of a circle?
A: A=(3.14159...)r 2 P=2r(3.14159...) Area=(pi)radius 2 Perimeter=2radius(pi) ;) Read More »
Source: wiki.answers.com
Q: How to Calculate the Area of a Circle
A: 1 Calculate the length of the radius. If you only know (or have measured) the diameter (the distance from one side of the circle to the other), then divide it b... Read More »
Source: www.wikihow.com
Q: What is the formula for the area of a circle?
A: pi x r. 2. (measured in square units) Read More »
Source: wiki.answers.com