The side length of the bottom of the hexagonal prism is equal to 1, and the side length is 2. After the side of the prism is expanded along a side edge, the area of the side expansion is calculated
According to the meaning of the title, the side expansion is rectangular, the side length of ∵ bottom is equal to 1, the length of ∵ side is 6 × 1 = 6, the length of ∵ side is 2, the width is 2, and the area of this side expansion is 6 × 2 = 12