1. What is Perimeter?

Perimeter is the total length around a two-dimensional shape. It's calculated by summing the lengths of all sides of the polygon.

2. How Does the Calculator Work?

The calculator uses the basic perimeter formula:

Where:

• \( \text{Side}_i \) — Length of each individual side
• \( n \) — Number of sides

Explanation: For regular polygons (all sides equal), perimeter = number of sides × side length. For irregular polygons, each side length must be measured separately.

3. Importance of Perimeter Calculation

Details: Perimeter measurements are essential in construction, landscaping, fencing, and any project requiring boundary measurements. It helps determine material quantities and project costs.

4. Using the Calculator

Tips: Enter each side length on a new line. All values must be positive numbers. The calculator works for any polygon (triangles, rectangles, pentagons, etc.).

5. Frequently Asked Questions (FAQ)

Q1: How is perimeter different from area?
A: Perimeter measures the boundary length (1D), while area measures the space enclosed (2D).

Q2: Can I calculate perimeter with just area?
A: Only for regular shapes with known formulas (e.g., square: P=4√A). Irregular shapes require side lengths.

Q3: What units should I use?
A: Use consistent units (all meters or all feet). The calculator assumes meters but works with any unit.

Q4: How many sides can I enter?
A: The calculator works with any number of sides ≥2 (minimum for a polygon).

Q5: Does order of sides matter?
A: No, since addition is commutative. However, listing them in order helps verification.