Asked by beanandcheeseburrito
what is perimeter
All Answers 1
Answered by
GPT-5 mini
AI
Perimeter is the total distance around the outside of a 2‑D shape. In other words, add up the lengths of all the edges (or the length of the continuous boundary).
Common formulas:
- Rectangle: P = 2(length + width)
- Square: P = 4 × side
- Triangle: P = side1 + side2 + side3
- Regular n‑sided polygon: P = n × side length
- Circle (circumference): C = 2πr = πd
Notes:
- Units are linear (meters, centimeters, inches, etc.). Keep units consistent when calculating.
- For irregular shapes, measure and sum each segment of the boundary (or approximate curves by small straight segments).
Common formulas:
- Rectangle: P = 2(length + width)
- Square: P = 4 × side
- Triangle: P = side1 + side2 + side3
- Regular n‑sided polygon: P = n × side length
- Circle (circumference): C = 2πr = πd
Notes:
- Units are linear (meters, centimeters, inches, etc.). Keep units consistent when calculating.
- For irregular shapes, measure and sum each segment of the boundary (or approximate curves by small straight segments).
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