Perimeter Calculator
Calculate the perimeter of common geometric shapes like rectangle, triangle, circle, and more. This easy-to-use tool helps students, teachers, and professionals quickly find the perimeter of various shapes.
Perimeter Formulas
- Rectangle: P = 2 × (Length + Width)
- Triangle: P = Side1 + Side2 + Side3
- Circle (Circumference): P = 2 × π × Radius
- Square: P = 4 × Side
Perimeter: 0 units
Shape Information
Enter values to see shape information.
Shape Properties
| Property | Value |
|---|---|
| Type | - |
| Perimeter | - |
| Area | - |
About Perimeter Calculation
The perimeter is the total distance around the outside of a two-dimensional shape. It's an important measurement in geometry used in various real-world applications like fencing a yard, framing a picture, or determining the amount of material needed for a border.
How to Calculate Perimeter
The method for calculating perimeter depends on the shape:
- Rectangle: Add the length and width, then multiply by 2 (P = 2 × (L + W))
- Triangle: Add all three sides (P = a + b + c)
- Circle (Circumference): Multiply the radius by 2π (P = 2πr)
- Square: Multiply one side by 4 (P = 4 × s)
Real-World Applications
Perimeter calculations are used in many practical situations:
Construction
Determining the amount of materials needed for fencing, baseboards, or molding.
Landscaping
Calculating the border length for garden beds or walkways.
Manufacturing
Determining the amount of material needed for the edges of products.