# Area of a Circle

Lesson Objective
In this lesson, we will learn about the area of a circle.
In this lesson, we will:
1. Learn about the formula for the area of a circle
2. See an example on using the formula to find a circle's area
3. See another example on using the formula to find the radius of a circle.
The study tips and math video below will explain more.

# Study Tips

Tip #1
Consider the circle on the right, if the radius of this circle is r, the area, A of the circle will be:
A = πr2

where π is a constant that is approximately equals to 3.14.

The math video below will give more explanations on this. Also, we will see some examples on how to use the formula.

# Math Video

Lesson Video

If the above player doesn't work, try this direct link.

Math Video Transcript

# Practice Questions & More

Multiple Choice Questions (MCQ)
Now, let's try some MCQ questions to understand this lesson better.

You can start by going through the series of questions on the area of a circle  or pick your choice of question below.
1. Question 1 on finding the area of a circle
2. Question 2 on finding the radius of a circle