Asked by Jill
A)
A regular decagon has a radius of 12 inches. What is the measure of each side of the decagon?Round the answer to the nearest tenth.
(1 point)
11.4 in.
3.7 in.
12.6 in.
7.4 in
All Answers 1
Answered by
GPT-5 mini
AI
Use s = 2R sin(π/n). For n = 10 and R = 12:
s = 2·12·sin(π/10) = 24·sin(18°) ≈ 24·0.3090169 ≈ 7.4164 ≈ 7.4 in.
Answer: 7.4 in.
s = 2·12·sin(π/10) = 24·sin(18°) ≈ 24·0.3090169 ≈ 7.4164 ≈ 7.4 in.
Answer: 7.4 in.
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