Find the face diagonal $ f $ of a cube if side $a = 5$.
Answer
$f = 5 \sqrt{ 2 }$
Explanation
To find face diagonal $ f $ use formula:
$$ f = \sqrt{ 2 } \cdot a $$After substituting $ a = 5 $ we have:
$$ f = \sqrt{ 2 } \cdot 5 $$ $$ f = 5 \sqrt{ 2 } $$This page was created using
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