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Pentagon Calculator

Calculate properties of a Regular Pentagon.

Side Length (s)

Area (A)	--
Perimeter (P)	--
Diagonal (d)	--

Formulas (Regular Pentagon)

Area: A = (1/4) × √(5(5 + 2√5)) × s²

Perimeter: P = 5s

Diagonal: d = s × (1 + √5)/2

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