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Area of a Circle - Math Goodies


is the radius. Let's look at some examples involving the area of a circle. In each of the three examples below, we will use Pi = 3.14 in our calculations.

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":.

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 ...

Area of a circle | Geometry foundations | Khan Academy


The area of a circle is pi times the radius squared (A = π r²). Learn how to ... We can get a calculator to figure out what this will be in decimal form. So, we have 64  ...

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


... 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 measure and a tool with...

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 calculator - Basic mathematics


Given the radius, use this area of a circle calculator to find the area for any circle.

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


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. Watch this ...

Area of Sectors and Segments of Circles - Regents Exam Prep Center


Let's review what we know about the area of circles and sectors. Area (circle). Area of sectors of circle (Sectors are similar to "pizza pie slices" of a circle.) Semi-  ...

Determine the Area of a Circle - Smart Conversion


Click here to choose anothe area calculator. The area of a circle can be determined by using the following formula: where d is the diameter of the circle, which is ...

Calculate the Area of a Circle
Enter the radius:
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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 ...

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.

Online Conversion - Area of a Circle


Calculate the area and circumference of a circle. ... For help with using this calculator, see the shape area help page. Return to the Shape Area section ...