The edges of a cuboid are respectively 3cm, 4cm and 12 cm. Find the length of the diagonal of cuboid. August 4, 2021July 11, 2019 by admin The edges of a cuboid are respectively 3cm, 4cm and 12 cm. Find the length of the diagonal of cuboid. A. 5 cm B. 19 cmC. 13 cm D. 144 cm