# Area of a Circle Worksheets

How to Find the Area of a Circle? Geometrical shapes are fun to play with. You learn a great deal about shapes when you get a grip over geometry. However, it is also important to know the area, perimeter, and other measures of any shape that is included in geometry. When it comes to circle, there are a few basics that you need to understand about it. The distance around or covering the circle is called its circumference. The distance across the circle is called the diameter of the circle, while its half distance is called its radius. The circumference of the circle is represented with a Greek letter known as pi (π). In order to find the are of a circle, we follow a simple but comprehensive formula derived from the measures of the circle. The area can be calculated by multiplying the value of pi with the square of the radius of the circle. A = π r2

• ### Basic Lesson

Guides students through the use of the area of a circle equation given a radius.

• ### Intermediate Lesson

Demonstrates how to determine the area of a circle when given a diameter.

• ### Independent Practice 1

A really great activity for allowing students to understand the concepts of the area of a circle. Find the area of each circle.

• ### Independent Practice 2

Students determine the area of a circle in 20 assorted problems. The answers can be found below.

• ### Homework Worksheet

Students are provided with 12 problems to achieve the concepts of Area of a Circle.

• ### Skill Quiz

This tests the students ability to understand Area of a Circle.

• ### Homework and Quiz Answer Key

Answers for the homework and quiz.

• ### Lesson and Practice Answer Key

Answers for both lessons and both practice sheets.

#### Clatter Click

There is a reason why train wheels clatter on the tracks. The wheels of a train are circles. The area of a circle is equal to π , so train wheels are squares that clatter on the tracks.