November 10, 2008

This resource has been contributed by Winpossible, and can also be accessed on their website by clicking here - Getting Started - Perimeter and Circumference.

This mini-lesson content introduces and walks you through the basic concepts about the perimeter and circumference. You'll learn to practice with perimeter and circumference using some examples, practice questions with solution, helped by instructor using audio video method and his own handwriting that brings in an element of real-class room experience.

Perimeter and circumference are the measure of any two dimensional object or closed shape. E.g. To find the perimeter of any polygon, find the sum of the lengths of the sides. Let us look at the case of a quadrilateral, with*a*, *b*, *c*, and *d* as the lengths of its sides. The perimeter for this is the sum of all the sides i.e.

*P* = *a* + *b* + *c* + *d*

In case of a circle, the perimeter is called circumference. The perimeter of circle is

*C* = ?*d* or 2?*r*

where*d* is the diameter or *r* is the radius of the circle.

This mini-lesson content introduces and walks you through the basic concepts about the perimeter and circumference. You'll learn to practice with perimeter and circumference using some examples, practice questions with solution, helped by instructor using audio video method and his own handwriting that brings in an element of real-class room experience.

Perimeter and circumference are the measure of any two dimensional object or closed shape. E.g. To find the perimeter of any polygon, find the sum of the lengths of the sides. Let us look at the case of a quadrilateral, with

In case of a circle, the perimeter is called circumference. The perimeter of circle is

where

This FREE mini-lesson is a part of Winpossible's online course that covers all topics within Geometry. Click on the video below to go through it. If you like it, you can buy our online course in Geometry by clicking here.

- Mathematics > General
- Mathematics > Geometry
- Education > General

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use models to determine the approximate formulas for the circumference and area of a circle and connect the models to the actual formulas.

determine the circumference and area of circles;