The perimeter of a rectangle is the total length of all its four sides. It is a measure of the boundary of the rectangle. To calculate the perimeter, you add together the lengths of all the sides. Since opposite sides of a rectangle are equal in length, the formula is straightforward and easy to use.
Formula for the Perimeter of a Rectangle
The perimeter of a rectangle can be found using the formula: Perimeter = 2 × (Length + Width). The length is the longer side of the rectangle, and the width (sometimes called breadth) is the shorter side.
Steps to Calculate the Perimeter
- Measure the length of the rectangle.
- Measure the width of the rectangle.
- Add the length and the width together and then multiply the sum by 2.
Examples of Calculating Rectangle Perimeter
Example 1: For a rectangle with a length of 8 meters and a width of 3 meters, the perimeter is 2 × (8 m + 3 m) = 2 × 11 m = 22 meters.
Example 2: If a rectangle has a length of 15 cm and a width of 10 cm, its perimeter is 2 × (15 cm + 10 cm) = 2 × 25 cm = 50 cm.
Applications of Rectangle Perimeter
Knowing the perimeter of a rectangle is useful in various scenarios, such as determining the amount of fencing needed for a garden, framing a picture, or creating layouts in construction and design projects.
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