top of page
Geometry worksheet in which students develop the formula for area of a circle and calculate areas of circles in terms of pi and as approximations.
Geometry worksheet to help students use the formula for area of a circle to calculate areas of circles, and use the formula to find radius, diameter, and circumference of circles with given areas.

Activity 3.8​

Assignment 3.9

​​Previous
​​Next
​Assignment 10.16

​Area of a Circle

 
Objectives
Develop and apply the formula for the area of a circle.
 
Calculate the circumference of a circle given its area.
 
Calculate the area of a circle given its circumference.
 
 

About Geometry Worksheet Assignment 10.16:             

 

Assignment 10.16 is an introduction to areas of circles.

 

Prerequisite Skills:  Calculate the circumference of a circle (Assignment 10.14).  Identify the radius and diameter of circles (Assignment 10.1).

 

Theorem:   The area of a circle is equal to one-half the product of its radius and circumference.

 

                                                                                                    2

                         The formula for the area of a circle is:  A =      r

                                                                                                                                                                                                                                                                                                 

bottom of page