The length of the longest rod that can be placed in a room of dimensions `(10 m xx 10 m xx 5m)` is
The length of the longest rod that can be placed in a room of dimensions `(10 m xx 10 m xx 5m)` is
A. 15m
B. 16m
C. `10 sqrt5 m`
D. 12 m
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Correct Answer - A
Length of the longest rod = length of the diagonal
`= sqrt(l^(2) + b^(2) + h^(2)) = sqrt(100 + 100 + 25) = sqrt255 = 15 m`
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