This resource has been contributed by Winpossible, and can also be accessed on their website by clicking here - Area of a Circle
In this mini-lesson, you'll learn the formulas used for calculating area of circles. It will be shared with the help of some examples and practice questions with solution, and watching video as well as explanations by the instructor in own handwriting.
You know from earlier learnings that a circle is a set of points in a plane at the same distance from a point called the center. The radius of a circle is the distance from the center to any point on the circle. The diameter, d
of a circle is equal to twice the radius i.e. d
. If point A
and point B
are on the circle with center C
= Radius of the circle. To find the area of a circle you can use formula: Area = r2
. For example, when a radius of a circle is 4 cm, its area is
i.e. 50.24 cm2
This FREE mini-lesson is a part of Winpossible's online course that covers all topics within Geometry. Click on the video below to go through it. If you like it, you can buy our online course in Geometry by clicking here.