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数学

Rectangle 计算器

提问

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变量说明

l= lengthw= widthA= areaP= perimeterd= diagonal

Area

Space enclosed by the rectangle.

Perimeter

Total distance around the rectangle.

Diagonal

Length of a corner-to-corner line (Pythagoras).

Find dimensions from area

Rearrange for a missing side.

Find l
Find w

详细指南即将推出

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专业提示

The diagonal of a rectangle is always longer than either side but shorter than their sum. Quick check: d² = w² + h² (Pythagorean theorem).

难度:中级

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The mathematical principles behind rectangle have practical applications across multiple industries and have been refined through decades of real-world use.

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Reviewed May 2026
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