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Question Number 188908 by Best1 last updated on 08/Mar/23

t h e r a d i u s o f a c i r c l e i s 12 c m u n i t s

f i n d t h e p e r i m e t e r o f a r e g u l a r

i n s c r i b e d

a . t r i a n g l e

b . h e p t a g o n

c . d e c a g o n

Answered by HeferH last updated on 09/Mar/23

P = n \cdot r \sqrt{2 - 2 \cos (\frac{2 π}{n})}

n : n u m b e r o f s i d e s

r : i n r a d i u s

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