find the length of longest iron rod that can be placed in a room of 40m long, 36m broad and 22√2high
Oh wait is it 36m not 30, I will recalculate.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
The rod needs to go diagonally from a bottom corner to the opposite top corner.
Use the 3-D version of Pythagoras' theorem:
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei