The length and breadth of a room are 3 m and 4 m.What is the length of the largest metallic rod that can be placed on the floor?

We have,length of the floor, l = 3 mbreadth of the floor, b = 4 mLength of longest rod placed on the floor = l2+b2 = 32+42 = 9+16 = 25 = 5 m

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