Area of a Circle

Area of a circles😇

The distance around a circle is called its circumference. The distance across a circle through its center is called its diameter. We use the Greek letter (pronounced Pi) to represent the ratio of the circumference of a circle to the diameter. In the last lesson, we learned that the formula for circumference of a circle is: . For simplicity, we use = 3.14. We know from the last lesson that the diameter of a circle is twice as long as the radius. This relationship is expressed in the following formula: .



                                                                 

The formula of area of a circles is :

                                            



Example questions to find area of a circle :

Question 1

Question 2

                                                    

Question 3

                                            

 Move to next topic  ➡  Area of Sector of a Circle