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  1. The length of the longest rod that can be placed in a room which is 12 m long, 9 m broad and 8 m high is
    1. 27 m
    2. 19 m
    3. 17 m
    4. 13 m
Correct Option: C

The required length = Diagonal of the room
= √12² + 9² + 8² = √144 + 81 + 64
= √289 = 17m


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