Find the length of the longest rod that can be put in a hall of dimension $23 m \times 10 m \times 10 m$ .

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Solution

Length = 23m
breadth = 10m
height = 10m
diagonal = longest rod
diagonal = √ l²+b²+c²
√ (23)²+(10)²+(10)²
√ 529+100+100
√ 729
= 27 m
so longest rod that can be put in a hall = 27 m

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