Perimeter of a Rectangle

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Lesson Objective
In this lesson, we will learn about the perimeter of a rectangle.
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About This Lesson
In this lesson, we will:
  1. Learn about the perimeter of a rectangle and derive the formula for finding its perimeter.
  2. See an example on using the formula to find the perimeter.
  3. See another example on using the formula to find the length of a rectangle.
The study tips and math video below will explain more.
a rectangle

Study Tips

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Tip #1
A rectangle has four right angles. The sides of a rectangle that are opposite each other have the same length.

Now, if a rectangle has the length of l and the width of w, its perimeter, P, will be the total distance around the outside of the rectangle. Hence:
P = 2(l+w)
a rectangle with the length l and width w

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

Math Video

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Video on the perimeter of a rectangle
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Video on the examples on using the formula P=2(l+w)
 
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Math Videos Transcript

Practice Questions & More

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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 perimeter of a rectangle or pick your choice of question below.
  1. Question 1 on finding the perimeter of a rectangle
  2. Question 2 on finding the width of a rectangle 
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