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Cyberpunk Math Lab: The Non-Linear World FREE

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Area & Perimeter with Algebra

55 min Cyberpunk Math Lab: The Non-Linear World

Learning Objectives

  • Write expressions for area and perimeter
  • Optimize dimensions
  • Solve geometric equations

Key Concepts

Perimeter

P = 2l + 2w for rectangles

Area

A = l × w for rectangles

Theory

**Using algebra with geometry:** Given constraints, write equations: - If P = 40: 2l + 2w = 40 → l + w = 20 → w = 20 - l - Then A = l(20 - l) = 20l - l² **Maximum area** of a rectangle with fixed perimeter is always a **square**. - P = 40 → max area when l = w = 10, A = 100

Examples

Rectangle: perimeter 24, find max area

Solution: l = w = 6, A = 36 (square)