How to Calculate Rectangle Perimeter
The perimeter of a rectangle is the total distance around its edges — essential for fencing, trim, and border calculations.
Rectangle Perimeter
P = 2 × (length + width)
Where:
- P = Perimeter
- l = Length
- w = Width
Step-by-Step:
- 1
Add length and width
Sum the two different sides.
- 2
Multiply by 2
Double the sum since a rectangle has two of each side.
Worked Examples:
Garden fence
l: 20mw: 15m
Result: 70m
P = 2(20+15) = 70m