Madhya Pradesh Police Exam Model Paper 8

Given:
Length = 16 meters
Breadth = 12 meters
Height = 15 meters
Concept:
Length of the largest rod that can be put in a room is equal to the length of the diagonal of that room.
Formula used:
Diagonal of a cuboid $=\sqrt{({\mathit{l}}^2+{\mathit{b}}^2+{\mathit{h}}^2)}$
Where l, b, and h are respectively the length, breadth, and height of a room
Calculation:
Length of longest rod $=\sqrt{({16}^2+{12}^2+{15}^2)}$
⇒ Length of longest rod $=\sqrt{\left(256+144+225\right)}=\sqrt{625}$
∴ Length of longest rod = 25 cm