KEY DISTINCTION: Perimeter = distance around (1D, measured in cm, m). Area = space inside (2D, measured in cmยฒ, mยฒ). Two different shapes can have SAME perimeter but DIFFERENT areas! Example: Rectangle 6ร2 (P=16, A=12) vs Rectangle 5ร3 (P=16, A=15). Same perimeter (16), different area! Farmers prefer maximum area for a given fence length โ that is why square fields are efficient.
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