The length of the longest flag pole that can be put in a store room of dimensions 10m × 10m × 5m is
The length of the longest flag pole that can be put in a store room of dimensions 10m × 10m × 5m is
A) 16m
B) 10m
C) 12m
D) 15m
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Correct option is (D) 15m
Length of the longest pole = Length of diagonal of cuboid
\(=\sqrt{l^2+b^2+h^2}=\sqrt{10^2+10^2+5^2}\)
\(=\sqrt{100+100+25}=\sqrt{225}\)
= 15 m
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