Find the incircle radius $ r $ of a hexagon if long diagonal $d = 12$.
Answer
$r = 3 \sqrt{ 3 }$
Explanation
STEP 1: find side $ a $
To find side $ a $ use formula:
$$ d = 2 \cdot a $$After substituting $ d = 12 $ we have:
$$ 12 = 2 \cdot a $$ $$ a = \dfrac{ 12 }{ 2 } $$ $$ a = 6 $$STEP 2: find incircle radius $ r $
To find incircle radius $ r $ use formula:
$$ r = \dfrac{ \sqrt{ 3 } \cdot a }{ 2 } $$After substituting $ a = 6 $ we have:
$$ r = \dfrac{ \sqrt{ 3 } \cdot 6 }{ 2 } $$$$ r = \dfrac{ 6 \sqrt{ 3 } }{ 2 } $$ $$ r = 3 \sqrt{ 3 } $$This page was created using
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