Web Results

Area of a Circle - Math Goodies


Area of a circle is presented in this interactive lesson from Math Goodies. ... or incorrect. To start over, click CLEAR. Use Pi = 3.14 to calculate your answers.

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 ... How to Calculate the Area ...

Circle Area Calculator - CalcuNation Online Calculators


With this circle calculator you can find the area of a circle to help with your geometry problems.

Calculate the Area of a Circle - CalculateMe.com


This calculator will calculate the area of a circle given its radius, using the famous formula area = pi x r squared.

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 do you calculate the square footage of a circle? | Reference.com


The area of a circle is determined by the formula: A = π r2. You can easily calculate the area of a circle in under a minute. All you need is a calculator, a circle to ...

Circle Calculator - Calculator Soup


Calculate the area, circumference and radius of circles. Given any 1 known variable of a circle, calculate the other 2 unknowns. Circle formulas and geometric ...

BBC - GCSE Bitesize: Area of a circle


There is only one formula for the area of a circle: A = π r<sup>2</sup> ... Find the area of a circle with a diameter of 20 cm. Use the π ... BBC World Service - Figure it out ...

Area enclosed by a circle - Math Open Reference


... resize the circle. As the size of the circle changes, the area is recalculated. ... Use the calculator on the right to calculate the properties of a circle. Enter any ...

Area of a circle segment - Math Open Reference


Area of a circular segment and a formula to calculate it from the central angle and ... Definition: The number of square units it takes to fill a segment of a circle.

More Info

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


Six Methods:Calculate Area ExamplesSample CalculatorArea of the Circle Finding the Area of a SectorSpecial circlesMeasuring the Diameter of Round Physical ...

Area of a circle | Area | Geometry foundations | High school ...


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.

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


If you have the diameter of a circle, you can use it to find the area of that circle. ... Did you know that you can figure out the formula for the area of a circle by first ...