If a cuboid has its sides along axes with lengths 3, 4 and 5, find the shortest distance between body diagonal and the side not containing the vertices of body diagonal.
(1) \(\frac{20}{\sqrt{41}}\)
(2) \(\frac{12}5\)
(3) \(\frac{15}{\sqrt{34}}\)
(4) \(\frac{18}5\)
