2. The sum of the side lengths of the cube is 60 cm, and the side length is () cm.

3. The side length of the cube is 0.2m, and the surface area is ().

4. The rectangle is 6 cm long, 2 cm wide, with a height of 1 cm and a surface area of ().

5. The sum of the side lengths of the cube is 36 decimeters, each side length is () and the surface area is ().

6. A brick is 10 cm long, 6 cm wide and 3.5 cm high, and its volume is () cubic centimeters.

7. The base area of a cuboid is 42 square centimeters, the height is 2 decimeters, and the volume is () cubic centimeters.

8. Fill in the appropriate numbers in brackets:

(1) 17.28 cubic meters = () cubic meters () cubic decimeter.

(2), 88,000 cubic centimeters = () milliliters = () liters

(3), 3640ml = () liter = () cubic decimeter.

(4)9.03 cubic decimeter = () liter = () ml

(5), 528 ml = () cubic centimeter = () cubic decimeter.

9. A square with a length of 6 decimeters, a volume of () cubic centimeters and a surface area of () square centimeters.

10. The cuboid has a volume of 36 cubic meters, a length of 6 meters, a width of 3 meters and a height of () meters.

1 1. A cube with a surface area of 24 square centimeters and a volume of ().

12. Make a cuboid with two cubes with a side length of 3 cm. The surface area of this cuboid is () square centimeters. Its surface area is less than two cubes () square centimeters.

13. Cut a cube with a surface area of 42 square centimeters into two equal cuboid blocks. The surface area of each cuboid block is () square centimeters. The surface areas of the two cuboids are () square centimeters larger than that of the cubes.

14. The sum of the sides of the cube is 36 cm. The side length of this cube is (), the surface area is () and the volume is ().

15. A cuboid with length, width and height of 4 decimeters, 3 decimeters and 1 decimeter respectively consists of () cubes with volume of 1 cubic decimeter.

Second, the question of right and wrong:

1. There may be two square faces among the six faces of the cuboid. ()

2. The length of three sides of a cuboid is called the length, width and height of the cuboid.

An object with six faces, twelve sides and eight vertices must be a cuboid. ()

A piece of paper has only two sides. ()

5、a2=2a()

6. The areas of two adjacent faces of a cuboid must be equal. ()

8. A cuboid with a square opposite is called a cube. ()

9. If the length, width and height of a rectangle are measured to be 3cm, then this 3cm cuboid has eight sides. ()

10. Two cuboids with equal volume must have the same surface area. ( )

1 1. If a cubic meter of wood is placed on the ground, its area must be 1 square meter. ( )

12 is a 6-decimeter-long cube with equal surface area and volume. ( )

13. The side length of the cube is expanded to 6 times, and the volume is also expanded to 6 times. ( )

14. If a cuboid plasticine is kneaded into a cube, we can see that its shape has changed, but the space it occupies remains the same. ( )

15. Saw a piece of wood with a surface area of 64 square decimeters into two sections from the middle, each with a surface area of 32 square decimeters. ( )

16. In a cuboid, the areas of four faces are equal. ( )

17. The length, width and height of a cuboid are an integer. Its upper area is 6 square decimeter, its front area is 15 square decimeter, and its left area is 10 square decimeter. ( )

18. There is a cuboid with a base area of 4 square decimeters. The bottom area of this cuboid must be square. ( )

19. When the side length of a cube is expanded by four times, its surface area is expanded by eight times. ( )

20. The volume of an object is 1 cubic decimeter, and the shape of this object must be a cube. ( )

2 1. m3 is greater than 1 m2. ( )

22. The volume of cuboids and cubes is equal to the bottom area multiplied by the height. ( )

23. When the volume of a cuboid is doubled, its length, width and height are also doubled. ( )

24. Two cuboids with the same volume have the same surface area. ( )

25 .. Four cubes with a side length of 1 cm are combined into a cuboid, and the surface area of this cuboid is 20 square centimeters. ( )

26 .. sides and equal cuboids are not necessarily equal in volume. ( )