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How to Calculate Rectangle

What is Rectangle?

A rectangle is a quadrilateral with four right angles. Opposite sides are equal and parallel. The square is a special rectangle where all four sides are equal.

Step-by-Step Guide

  1. 1Area = length × width
  2. 2Perimeter = 2 × (length + width)
  3. 3Diagonal = √(length² + width²)

Worked Examples

Input
w=8, h=5
Result
A=40, P=26, d=9.43
d=√(64+25)=√89
Input
w=12, h=9
Result
A=108, P=42, d=15
3-4-5 triple scaled ×3

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