According to the meaning of the question, the original cuboid is a cuboid with two square opposite sides. Another feature of this cuboid is that the other four faces are the same in shape and size (area) except that the two opposite faces are square. It can be concluded that the added part is actually four rectangles with a width of 5 cm. The total area of four identical rectangles is 160 cm2. 1 is 40 square centimeters. Therefore, the length of the rectangle is 8 cm, that is, the length of the length and width of the original cuboid (or the side length of the cube now), and the height is 8-5=3 (cm). Knowing the length (8 cm), width (8 cm) and height (3 cm) of the original cuboid, we can calculate its surface area or volume.

List:

Original length or width: 160÷4÷5=8 (cm), height: 8-5=3 (cm).

Original surface area: 8×8×2+(8×3)×4 =224 (square centimeter).

Original volume: 8×8×3= 192 (cubic centimeter)