18 page How to do cuboid and cube homework in the next semester of grade five (urgent urgent urgent urgent)

The volume of a rectangular piece of wood is 240 cubic decimeters. It is known that wood is 6 decimeters wide and 2 decimeters thick. How long is this wood?

Cuboid volume = length * width * height

Therefore, length = volume ÷ width ÷ height =240÷6÷(6-2) = 10 decimeter.

The sum of all sides of a cuboid is 120 decimeter. The bottom of this cuboid is square and its circumference is 44 decimeters. What is the surface area and volume of this cuboid?

The height of the cuboid =( 120-44*2)÷4=8 decimeters.

Surface area =11*1* 2+8 *11* 4 =? Square DM

Volume =11*11* 8 =? cubic decimeter

The math problem is urgent ~

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