To make a cuboid wooden box without a cover, its length and width are 8 decimeters. How many square meters of wood do you need?

To make a cuboid wooden box without a cover, its length and width are 8 decimeters. How many square meters of wood do you need?

Area of wood required = 8 × 8 + 8 × 5 × 4 = 224 (M2)

To make a cuboid wooden box without cover, 3 decimeters long and 2 decimeters wide, at least how many square decimeters of wood is needed, this cuboid wooden box
How many cubic decimeters is the volume of

Surface area = 3 × 2 + (3 × 1 + 2 × 1) × 2 = 16 (square decimeter)
Volume = 3 × 2 × 1 = 6 (cubic decimeter)

A cuboid wooden box without cover is 1.4 meters long, 0.8 meters wide and 0.6 meters high. How many square decimeters of wood should be used to make this wooden box?

1.4 * 0.8 + 1.4 * 0.6 * 2 + 0.8 * 0.6 * 2 = 1.12 + 1.68 + 0.96 = 3.76 square meters = 376 square decimeters