The sides of a regular decagon is denoted as 'r'. express the perimter in terms of 'r' (Decagon is a regular polygon having 10 equal sides).
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2
Answer:
10
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Answered by
10
Answer: 10r
Step-by-step explanation:
perimeter = sum of all sides
= r+r+r+r+r+r+r+r+r+r (10 times)
= 10r
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