At the four corners of a square newspaper with a CM side length, subtract one side length from each other, which is BCM (b)
B = 3.4
It takes 3 / 4 square meters of cardboard to make a cube carton and 7 / 8 square meters of cardboard to make a cuboid carton
Which carton uses the most cardboard?
Three fourths of the square meters are less than seven eighths of the square meters
The cuboid box takes up to 7 / 8 square meters