1. The square area is the square of the side length, and the large area is twice as large as the small area, so the side length ratio under the root sign is 2: 1.

2. The volume is the area of the bottom multiplied by the height. The cube to open. 2 16 is followed by 6, that is, the side length is 6. The area of a face is 6*6=36. Six sides: 36*6=2 16 cm2.