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MCQ

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

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#### 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 .

Concept: Surface Area of a Cuboid

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