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Decagon Calculator
Calculations at a regular decagon, a polygon with 10 vertices. Enter one value and choose the number of decimal places. Then click Calculate.
Formulas:
d = a * ( 1 + √5 )
e = a * √ 5 + 2 * √5
f = a/2 * √ 14 + 6 * √5
g = a/2 * √ 10 + 2 * √5
Height = e = 2 * ri
p = 10 * a
A = 5/2 * a² * √ 5 + 2 * √5
rc = a/2 * ( 1 + √5 )
ri = a/2 * √ 5 + 2 * √5
Angle: 144°
35 diagonals
Edge length, diagonals, height, perimeter and radius have the same unit (e.g. meter), the area has this unit squared (e.g. square meter).
© Jumk.de Webprojects | Online Calculators
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