Example 1
\(l = 8, w = 5 \rightarrow A = 8 \times 5 = 40\) units², \(P = 2(8 + 5) = 26\) units
Calculatrice d'aire de rectangle
Calculer l'aire et le périmètre d'un rectangle en utilisant la longueur et la largeur avec solution détaillée étape par étape
Résultats
Entrez les valeurs et cliquez sur Calculer pour voir le résultat.
Theory & Formula
The area of a rectangle is the space enclosed by its four sides. It is calculated by multiplying the length by the width.
The perimeter is the total distance around the rectangle, calculated by adding all four sides or using the formula 2(l + w).
Properties
- Opposite sides are equal and parallel
- All angles are 90 degrees (right angles)
- Diagonals are equal in length and bisect each other
- A square is a special case where l = w
\(A = l \times w, P = 2(l + w)\)
Worked Examples
Example 2
\(l = 12, w = 3 \rightarrow A = 12 \times 3 = 36\) units², \(P = 2(12 + 3) = 30\) units