Question

The length of the largest pole that can be placed in a hall $10m$ long, $10m$ wide and $5m$ high is _______.

• A. $12m$
• B. $13m$
• C. $14m$
• D. $15m$

Answer 1

Answer: (D)

$15m$

Largest pole that can be placed in a hall is along the diagonal.

Dimensions of a hall $=10\times 10\times 5$

Length of the diagonal of a hall $=\sqrt{{10}^2+{10}^2+5^2}=\sqrt{225}=15m$