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数学

Square 计算器

正方形计算器

A = s² | P = 4s | d = s√2

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专业提示

The square is the rectangle with maximum area for a given perimeter. A square with perimeter 40 has area 100. A rectangle 5×15 with the same perimeter has area 75 — 25% less efficient.

难度:初级

你知道吗?

The square is the most efficient shape for packing — a grid of squares covers 100% of a plane without gaps. Hexagons also cover 100% but with a shorter total perimeter per unit area, which is why honeycombs use hexagons (less wax needed).

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Reviewed May 2026
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