Thread:Balu.ur/@comment-25501845-20141116152623

Another question from my coming Exam (On thursday)

Q1) What is the length of the largest rod which can be placed in a room of 24metre long, 8metre wide and 6metre high.

I know how to get the answer, by using this equation :- d^2 = l^2 + b^2 +h^2

But, how to prove it ? That is how to get such an equation ?  