Firstly, the formulas for calculating the rectangular area and cuboid volume should be clarified.

Also, find out how many times the side length is expanded and how many times the corresponding area and volume are expanded.

First of all, we can see that the corresponding area is (5× 14)+(3×8)=94, and the corresponding volume is 3×4×5=60.

Look at the changes in cartons and pictures. The size in the drawing is expanded to 3 times of the original size to make a cube, and then to 10 times to make a carton, so the size * * * is expanded to 30 times of the original size (all sides), so the area should be expanded to (30×30) times of the original size, and the area of the carton (required cardboard) is 94× 900 = the size of the carton has been expanded to (.

I hope you are satisfied, but the data have to be calculated carefully. )