Question

A room has dimensions $5m\times 3m\times 4m$.The length of the longest pole which can be accommodated in the hall is

• A. $5\sqrt{2}m$
• B. 25 m
• C. 50 m
• D. $2\sqrt{5}m$

Answer 1

Answer: (A)

$5\sqrt{2}m$

Consider given a room has dimensions 5m×3m×4m.

Now,

The length of the longest pole which can be accommodated in the hall is,

$=\sqrt{5^2+3^2+4^2}=\sqrt{25+9+16}=5\sqrt{2}$ m

Hence, this is the answer.