Web Results

Area of a Circle - Math Goodies


Area of a circle is presented in this interactive lesson from Math Goodies. ... In the last lesson, we learned that the formula for circumference of a circle is: C ...

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 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 Sectors and Segments of Circles - Regents Exam Prep Center


Notice that when finding the area of a sector, you are actually finding a fractional part of the area of the entire circle. The fraction is determined by the ratio of the ...

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 ...

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 | Geometry foundations | Khan Academy


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.

Area Calculator - Calculator.net


Free online tool to estimate the area of 7 most common shapes. ... adding the areas up. This calculator is especially useful for estimating the land area. ... Circle  ...

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


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

Cool math .com - The Trigonometry of Circles - arc length, area of a ...


Definitions and formulas for the arc and the arc length of a circle, sector and the area of the sector of a circle, the unit circle, the angles on the unit circle in ...

Calculate the Area of a Circle
Enter the radius:
More Info

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 - 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":.

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.