the radius of a circle is 12cmunits find the perimeter of a regular inscribed a. triangle b.heptagon c. decagon


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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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