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ANEK [815]
2 years ago
8

Find the perimeter of a regular dodecagon whose vertices are twelve equally spaced points on the unit circle.

Mathematics
1 answer:
Ivenika [448]2 years ago
3 0
The vertex angle of any triangle of the dodecagon formed by radii and a side is 360/12=30º.
The half-length of the base of the triangle is sin15=0.2588 approx.
Since there are 12 sides there are 24 half-sides in the perimeter=6.2117.
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