Discussion
The length, breadth and height of a room is 5m, 4m and 3m, respectively. Find the length of the largest bamboo that can be kept inside the room
Answer: D
The longest bamboo lies along the room's space diagonal.
\[ d = \sqrt{l^{2} + b^{2} + h^{2}} = \sqrt{25 + 16 + 9} = \sqrt{50} \]
\[ = 5\sqrt{2} \approx 7.07 \text{ m} \]
The 7 m option is close but not exact; the floor diagonal alone would be \( \sqrt{41} = 6.4 \) m.
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