![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
A square timber with a length of 2 meters and a side length of 1 decimeter of cross-sectional area has a surface area of 〔 square decimeter 〕 and a volume of 〔 cubic decimeter 〕
2 m = 20 decimeters
2 × (1 × 20 + 20 × 1 + 1 × 1) = 82 (square decimeter)
20 × 1 × 1 = 20 (cubic decimeter)
A: its surface area is 82 square decimeters,
The volume is 20 cubic decimeters
The cross section of a square wood is a square with a side length of 2 decimeters, and its surface area is 96 square decimeters. How many cubic decimeters is its volume?
The lateral area is 96-2 × 2 × 2 = 88 square decimeters
Bottom perimeter 2 × 4 = 8 decimeters
So the height is 88 △ 8 = 11 decimeters
So the volume is 2 × 2 × 11 = 44 cubic decimeters
RELATED INFORMATIONS
- 1. A square wood is 2 meters long and its cross section is a square with a side length of 1 decimeter. How many square decimeters is its surface area? How many cubic centimeters is its surface area?
- 2. 0.004 m3 = how many cubic millimeters
- 3. How much brick, sand and cement are used for a cubic wall?
- 4. How many cubic meters of gas can a natural gas boiler use in a day? Is there a formula?
- 5. Cut a 4-meter-long log into three small columns and increase its surface area by 8 square decimeters______ Cubic decimeter
- 6. Cut a 4-meter-long circle into three sections and increase its surface area by 8 square decimeters. What is the volume of this log?
- 7. A red ribbon is 18.84 decimeters long. Cut two-thirds of it to make a round stage prop. What's the radius of the prop?
- 8. The following log is processed into the largest square log. The length of the log is 1.5m and the diameter of its bottom surface is 10cm. What is the volume of the square log? (2) How many cubic decimeters of wood become waste in the processing?
- 9. A diameter of 20 cm, 2 meters long log, according to the volume of the cuboid square wood is how many cubic decimeters
- 10. A cylindrical timber is three meters long. After it is cut into three equal sections, the surface area increases by 18.84 square centimeters. What is the original volume of this log
- 11. Cut a cube wood block with an edge length of 8 decimeters into the largest cylinder. How many cubic decimeters is the volume of this cylinder?
- 12. How many cubic decimeters is the volume of the largest cylinder?
- 13. Cuboid and cube related formula, such as volume, area, edge length sum and so on There's more than that
- 14. The formula of cuboid and cube's edge length and volume A rectangular block of wood is 2.7 meters long, 1.8 meters wide and 5 meters long. It should be cut into small cube blocks of equal size. No surplus is allowed. How many decimeters is the maximum edge length of a small cube?
- 15. Is the volume formula of cube V equal to the cube of a equal to 3A right or wrong
- 16. What about the log cube
- 17. A steel pipe is 2 meters long, 10 cm in outer diameter and 8 cm in inner diameter. Each cubic centimeter of steel pipe weighs 7.5 grams. How many kilograms does 100 such steel pipes weigh?
- 18. A cone has a diameter of 8 cm and a volume of () cubic cm
- 19. The diameter and height of the bottom of a cone are 8 cm. What is its volume
- 20. A cylindrical steel pipe, with an inner diameter of 4cm and an outer diameter of 8cm, is 6m long and weighs 7.8G per cubic centimeter. How many kg does this steel weigh?