Find the side $ a $ of an equilateral triangle if incircle radius $r = 450$.
Answer
$a = 900 \sqrt{ 3 }$
Explanation
To find side $ a $ use formula:
$$ r = \dfrac{ \sqrt{ 3 } \cdot a }{ 6 } $$After substituting $ r = 450 $ we have:
$$ 450 = \dfrac{ \sqrt{ 3 } \cdot a }{ 6 } $$ $$ \sqrt{ 3 } \cdot a = 450 \cdot 6 $$ $$ \sqrt{ 3 } \cdot a = 2700 $$ $$ a = \dfrac{ 2700 }{ \sqrt{ 3 } } $$ $$ a = 900 \sqrt{ 3 } $$This page was created using
Equilateral Triangle Calculator