According to the meaning of the question and the formula for calculating the surface area of a cuboid, the positive and negative areas = 10* 12*2=240 square centimeters.
Area of left and right sides =6* 12*2= 144 cm2.
Total area =240+ 144=384 cm2.
So the area of this trademark paper is at least 384 square centimeters.
Extended data
superficial area
Because the two opposite faces are equal in area, count the back two faces first, then the front and back, and finally the left and right faces.
Let the length, width and height of a cuboid be a, b and c respectively, then its surface area is S = (ab+bc+ca)×2, which is also equal to 2ab+2bc+2ca, 2 (AB+BC+CA);
Formula: the surface area of a cuboid = length× width×2+width× height× 2+length× height× 2, or: the surface area of a cuboid = (length× width+width× height+length× height) × 2.
References:
Baidu Encyclopedia: Cuboid