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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 | Area and circumference of circles | Khan Academy

www.khanacademy.org/math/basic-geo/basic-geo-area-perimeter/basic-geo-area-circumference/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.

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

www.wikihow.com/Calculate-the-Area-of-a-Circle

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

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.

Area of a circle calculator - Basic mathematics

www.basic-mathematics.com/area-of-a-circle-calculator.html

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

Circle Calculator - Calculate Area, Diameter, Circumference and ...

www.easycalculation.com/area/circle.php

The Circumference is the distance once around the circle. This online circle calculator allows you to calculate the area, diameter, circumference and sector area ...

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.

Online Conversion - Area of a Circle

www.onlineconversion.com/shape_area_circle.htm

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 ...

BBC - GCSE Bitesize: Area of a circle

www.bbc.co.uk/schools/gcsebitesize/maths/geometry/circlesrev3.shtml

Find the area of a circle with a diameter of 20 cm. Use the π button on your calculator, and give the answer correct to 1 dp. image: circle, diameter 20cm.

www.ask.com/youtube?q=Calculate Area of a Circle&v=aZi1rgsZs4s
Sep 7, 2012 ... This tutorial shows how to find the area of a circle, given a diameter or a ... Math Tip: Calculate Area, Diameter and Circumference of a Circle ...
Answer
Calculate the Area of a Circle
Enter the radius:
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Area of a Circle - Math is Fun

www.mathsisfun.com

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

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 ...

Calculate the Area of a Circle - CalculateMe.com

www.calculateme.com

This calculator will calculate the area of a circle given its radius.