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Area of a Circle - Math Goodies

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

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

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":.

Circle Calculator - Calculator Soup

www.calculatorsoup.com/calculators/geometry-plane/circle.php

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 | Area | Geometry foundations | High school ...

www.khanacademy.org/math/geometry/hs-geo-foundations/hs-geo-area/v/area-of-a-circle

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.

Circle Area Calculator - CalcuNation Online Calculators

www.calcunation.com/calculator/circle-area.php

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

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

www.virtualnerd.com/pre-algebra/perimeter-area-volume/circles/circle-sector-area-examples/circle-area-from-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.

Calculate the Area of a Circle - CalculateMe.com

www.calculateme.com/cArea/AreaOfCircle.htm

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 ...

www.mathwarehouse.com/geometry/circle/area-of-circle.php

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

www.reference.com/math/calculate-square-footage-circle-4ff067474032a974

... 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...

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

www.virtualnerd.com/pre-algebra/perimeter-area-volume/circles/circle-sector-area-examples/circle-area-from-radius

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.

Answer
Calculate the Area of a Circle
Enter the radius:
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How to Calculate the Area of a Circle (with Examples) - wikiHow

www.wikihow.com

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 - Basic mathematics

www.basic-mathematics.com

Dec 1, 2016 ... To calculate the area of a circle using the value of pi is what this lesson will teach you.

Area of a circle calculator - Basic mathematics

www.basic-mathematics.com

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