Question

Find the length of the longest pole that can be placed in a room $30$ metres long, $15$ metres broad and $10$ metres high.

• A. $35m$
• B. $34m$
• C. $33m$
• D. $32m$
• E. $27m$

Answer 1

The correct option is A $35m$

greatest length is length of diagonal in a cuboid

$\Rightarrow d=\sqrt{l^2+b^2+h^2}=\sqrt{{15}^2+{30}^2+{10}^2}=35m$