 This is a math course on duration, perimeter and area of figures in the 6th grade, studying the perimeter of a square, rectangle and circle. We will study the perimeter of a square, rectangle and a circle, the definition of area and the definition of particular polygons. Then, we will finish this lesson with the notion of duration and the calculation of time. The student will have to know how to convert areas and perimeters and know the formulas for calculating the area of a square, a rectangle and then know how to calculate the perimeter of a circle with the famous number .
Operative techniques by decomposing figures in order to calculate more easily the perimeter or the area of a figure or to compare the perimeter and the area of two figures in geometry in the sixth grade. We will end this chapter with the calculation of duration and the conversion of time, but we will also see how to add or subtract to calculate the duration between two events.

## I. Lengths and perimeters

### 1. concept of perimeter

Definition:
The perimeter of a figure is the length of its contour.

Example: perimeter of a polygon.

To calculate the perimeter P of this polygon, we add the lengths of each side. .

The perimeter of this polygon is 7.9 cm. ### 2. perimeter of a rectangle and a square Example:

The perimeter P of the rectangle shown below is : The perimeter of the rectangle is 8 cm. ### 3. perimeter of a circle

Ownership:
The length (or perimeter) P of a circle is given by . Example:

The perimeter of a circle of radius 3 cm is ## II.Areas

### 1. figure areas

Definition:
The area of a figure is the measure of the interior surface.

Example:

The area of the figure below is equal to six units. ### 2.area units

Definition:
A unit of area often used is the square meter (m²).1 m² is the area of a square with side 1 m.

Other area units

The square decimeter (dm²) is the area of a square of side 1 dm.

A square of area 1 m² contains 100 squares of area 1 dm².

So .  Vocabulary:

To measure the area of land, the are (a) and the hectare (ha) are used: and .

### 3.areas of particular polygons ### 4. area of a disk ## III. durations

### 1.Duration

Definition:

The measure of time between two moments is called duration. A unit of time often used is the second (s).

Other units of duration: Example:

A movie starts at 5:40 pm and ends at 7:10 pm.

Its duration is 20 min + 1 h 10 min=1 h 30 min.

This session lasted 1 h 30 min.

Périmètres et aires de figures

Un QCM de maths sur les périmètres et aires de figures. en 6ème.

Things to remember:

Skills to learn about perimeters and areas: • Know the definition of the perimeter and area of a figure;
• Know the formulas for the square, the rectangle, the circle;
• Know how to convert lengths;
• Know how to convert areas;
• Solve problems.

This course is in accordance with the official programs of thenational education.

As a complement, you can consult the exercises on the perimeter and area of a figure in sixth grade.

Télécharger puis imprimer cette fiche en PDF

Télécharger ou imprimer cette fiche «perimeters and areas: 6th grade math lessons to download in PDF.» au format PDF afin de pouvoir travailler en totale autonomie.

## D'autres fiches dans la section 6th grade math class

Les dernières fiches mises à jour

Voici la liste des derniers cours et exercices ajoutés au site ou mis à jour et similaire à perimeters and areas: 6th grade math lessons to download in PDF. . Mathématiques Web c'est 2 145 937 fiches de cours et d'exercices téléchargées.

Copyright © 2008 - 2023 Mathématiques Web Tous droits réservés | Mentions légales | Signaler une Erreur | Contact

.
Scroll to Top
Mathématiques Web

FREE
VIEW