A perimeter is a path that encompasses/surrounds a two-dimensional shape.The term may be used either for the path, or its length—in one dimension. It can be thought of as the length of the outline of a shape. The perimeter of a circle or ellipse is called its circumference. Calculating the perimeter has several practical applications. The perimeter is defined as the distance around an object. For example, if measuring the perimeter of a football field, you would measure the entire edge of the field. If measuring a more unusually shaped object, you would need to be careful to measure and add together the length of each individual side to ensure you. Its not always like that. You could only do that when all your sides lengths are equal. Say you have a octagon with equal length of sides = 5 , then you could find the perimeter by multiplying the number of sides by the length. How to Find Perimeter of a Rectangle Easily. Zoheb Grade 4 Maths 0. Before we go ahead and tell you the way to calculate the Perimeter of a Rectangle, we would like to explain a few things, so you learn it in a better way and never forget. A Rectangle always has the same length for both the sides; How to Find Perimeter. The general way to find the perimeter of any shape is to add up the length of all its sides. For certain shapes, such as rectangles and circles, there are specific formulas you can use to simplify the process. In. If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Click here for the full version: Ever had someone come up to you on the street, hand you a shape, and ask you to find the perimeter of that. How to find perimeter - perimeter formulas. Usually the most simple and straightforward approach is to find the sum of all of the sides of a shape. However, there are cases where there are no sides (such as an ellipse, circle, etc), or one or more sides are unknown. In this paragraph, we'll list all of the equations used in this perimeter. Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents. Learn how to find perimeter with Mr. J. Whether you're just starting out, need a quick refresher, or here to master your math skills, this is the place for some extra math help!