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Question
The length of the longest rod that can be fitted in a cubical vessel of edge 10 cm long, is
Options
10 cm
10`sqrt(2)` cm
10`sqrt(3)` cm
20 cm
Solution
The longest rod that can be fitted in the cubical vessel is its diagonal.
Side of the cube (l) = 10 cm
So, the diagonal of the cube,
`= sqrt(3l)`
`= 10 sqrt(3 )` cm
So, the length of the longest rod that can be fitted in the cubical box is `10 sqrt(3 )` cm .
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