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 ...
Given the radius, use this area of a circle calculator to find the area for any circle.
Six Methods:Calculate Area ExamplesSample CalculatorArea of the Circle
Finding the Area of a SectorSpecial circlesMeasuring the Diameter of Round
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 ...
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 a circle, formula for area explained with examples, pictures, interactive
examples and quiz.
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.
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
The Circumference is the distance once around the circle. This online circle
calculator allows you to calculate the area, diameter, circumference and sector
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 ...