Perimeter Formulas
Introduction
This page contains the formula for area of a:
Examples are given to show you how to use the formulas.
Have fun practicing perimeter questions by downloading our free Zapzapmath Home Grade 3 app and playing Fency Farm:
Apple App Store (iOS) |
Google Play (Android)
Square
Formula
The lesson on the perimeter of a square will provide the explanation and examples needed to understand this formula. Here's the summary:
All the sides (edges) of a square have the same length. If each side has the length L, the formula for the preimeter P will be:
Example
Given a square where the side lengths are 3cm. Find the perimeter of this square.
Rectangle
Formula
The lesson on the perimeter of a rectangle will cover the basics needed to use this formula. Here's a short summary:
If a rectangle has the length l and the width w, the perimeter P, will be:
Example
Given a rectangle with the length of 5ft and the width of 3ft. Find its perimeter.
Triangle
Formula
The lesson on the perimeter of a triangle will explain the basics behind this formula. Here's the summary:
For a triangle with the side lengths of a, b and c, its perimeter P, will be:
Example
Given a triangle with the side lengths of 3cm, 4cm and 5cm. Find the perimeter of the triangle.
Parallelogram
Formula
The lesson on the perimeter of a parallelogram will explain the basics. Here's the summary:
For a parallelogram with the side lengths of a and b, its perimeter P, will be:
Example
Given a parallelogram with the side lengths of 8 inches and 6 inches. Find the perimeter of this parallelogram.
Have fun practicing perimeter questions by downloading our free Zapzapmath Home Grade 3 app and playing Fency Farm:
Apple App Store (iOS) |
Google Play (Android)
