Development of traditional food packaging

According to the development diagram, it can be concluded that this is a 6-prism.

Lateral area is six rectangles, which is 6ab.

The total area also includes two regular hexagons.

The side length of a regular hexagon is a.

Imagine it as six regular triangles with side length a, and the area of each regular triangle is (√3 a2)/4.

12 Two regular hexagons are 3√3 a2.

The total surface area is 6ab+3√3 a2.

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I hope to adopt ↖ (ω) ↗.

O(∩_∩)O haha ~