Job Recruitment Website - Job seeking and recruitment - (2004? As shown in the picture, cut off four corners to make a box without a lid. Please measure the relevant data and calculate how much cardboard is needed to make this box.

(2004? As shown in the picture, cut off four corners to make a box without a lid. Please measure the relevant data and calculate how much cardboard is needed to make this box.

According to stem analysis and measurement, we can get the following results:

3.5×3.5-0.8×0.8×4,

= 12.25-2.56,

=9.69 (square centimeter);

A: It takes 9.69 square centimeters of cardboard to make this box.