Question

find the length of the longest rod that can be placed in a room of dimensions 8m ,10m and 6m

Answer 1

diangonal =√8^2+10^2+6^2=√200=10√2cm

Answer 2

Let Length of rode be x
             So, x=√l^2+b^2+r^2
                   x=√8^2+10^2+6^2
                   x=√64+100+36
                   x=√200
                   x=10√2 m
 So Length of rod=10√2 m