The wooden box used to store rice in the grain and oil store is a rectangular parallelepiped with no lid. The length is 1.2, the width is 0.6, and the height is 0.8 meters. 1. Make one like this

(1) 1.2×0.6+1.2×0.8×2+0.6×0.8×2,

=0.72+1.92+0.96,

=3.6 ( square meters);

Answer: To make such a wooden box, at least 3.6 square meters of wood must be used.

(2) 1.2×0.6=0.72 (square meters);

Answer: It covers an area of ??0.72 square meters.

(3) 1.2×0.8×2+0.6×0.8×2,

=1.92+0.96,

=2.88 (square meters);

=1.92+0.96,

=2.88 (square meters); p>

Answer: The painting area is 2.88 square meters per ***.

?4.(1.2×0.8+0.6×0.8)×20

=(0.96+0.48)×20

=1.44×20

=28.8

It takes 28.8 square meters of trademark paper to affix this wooden box