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There is a 96 cm long wire, which just forms a cube frame 1. How many meters is the edge length of this cube? 2. Color paper is pasted on each surface. How much color paper do you need? 3. What's the volume of a cuboid with six such squares?
1 96 / 12 = 8cm (cube has 12 edges)
28 * 8 * 6 = 284cm2 (calculate the surface area)
3 6*8*8*8=3072cm3
A wire can just encircle a circle with a radius of 2 cm. If this wire is used to encircle a rectangle with a length of 5 cm, the width of the rectangle is () cm? The area is () square cm?
Width = 2 × 2 × 3.14 △ 2-5 = 1.28cm
Area = 5 × 1.28 = 6.4 square centimeter
The length of an iron wire is 24cm, the iron wire is welded into a cube, and the surface area and volume are calculated
The total length of the wire is the sum of the edge lengths of the cube, and the sum of the edge lengths of the cube = edge length × 12
So the edge length of cube is 24 △ 12 = 2 (CM)
The area is 2 × 2 × 6 = 2 (square centimeter) and the volume is 2 × 2 × 2 = 8 (cubic centimeter)
With a 24 decimeter wire welded into a cube frame, the cube volume is______ And the surface area is______ ．
Edge length: 24 △ 12 = 2 (decimeter) surface area: 2 × 2 × 6 = 24 (square decimeter) volume: 2 × 2 × 2 = 8 (cubic decimeter) answer: the surface area of this cube is 24 square decimeter, and the volume is 8 cubic decimeter. So the answer is: 24 square decimeter, 8 cubic decimeter
RELATED INFORMATIONS
- 1. With 60 cm long wire welded into a cube frame, the surface area of the cube is () square centimeter?
- 2. The length of an iron wire is 36cm. If it is made into a cube frame, the edge length is () cm. If it is made into a cuboid frame of 3cm high and 2cm wide, the length is () It's better to have an explanation
- 3. What's the surface area of a cuboid made of three cuboids with 10 cm edges?
- 4. If the edge length of a cube increases by 1 cm, its volume will increase by () cm;
- 5. The total edge length of a cube is 96, its edge length is cm, its floor area is square centimeter, its surface area is square centimeter, and its volume is cubic centimeter
- 6. How many cm more are the sum of the surface areas of the three cubes? 2. For a project, team a and team B work together for 10 days. Now team a works for 10 days and team B works for 6 days, leaving 1 / 6 of the whole project unfinished. How many days does it take team B to complete the whole project alone? 3. A batch of parts, if the master and apprentice cooperate, will be completed in 18 hours. Now it takes 12 hours for the master to make the parts, and then it takes 10 hours for the master and apprentice to cooperate. If the master and apprentice make the parts by themselves, how many hours will it take? (write it down arithmetically)
- 7. A cuboid is 8 cm in length, 6 cm in width and 5 cm in height. Its bottom area is______ Square centimeter, the surface area is______ Square centimeter, the volume is______ Cubic centimeter
- 8. If the height of a cuboid is reduced by 3cm, it becomes a cube. At this time, the surface area is reduced by 96cm2. What is the volume of the cuboid
- 9. The surface area of a cube is 54 square decimeters. What is the sum of all the edges of the cube?
- 10. The sum of the edges is a cube of 72 cm in length
- 11. After a 150cm long iron wire is used to make a cube frame, 6cm iron wire is left. How long is the edge of the cube?
- 12. The edge length of a cube is 12 cm. If the edge length is increased by 2 times, the sum of its edge lengths will be increased by () times, its volume will be increased by () times, and its surface area will be increased by () times
- 13. The surface area and volume of the large cuboid are () cm2 and () cm3 respectively
- 14. The circle shape, its area is the second power of 200cm, the outer radius of the big circle is 10cm, the inner radius of the small circle is what? Solve by equation
- 15. The area of the ring is 200 cm square, the radius of the outer circle is 10 cm, and the radius of the inner circle is 10 cm
- 16. The diameter of a circle is 4.8cm, the circumference is () cm, the radius is () cm, and the area is () square centimeter
- 17. Cut out the largest square on a round piece of paper with a diameter of 10 cm. The square has an area of () m2
- 18. A circle with a diameter of 10 cm, draw the largest square in it. What's the area of the square
- 19. Saw the largest circle on a square board with a side length of 20 cm. The area of the circle is______ Square centimeter. What's the rest of the leftover material______ Square centimeter
- 20. A 6N cube wood block with a side length of 10cm is put into the water tank. When 5cm water is added, it is found that the wood block still sinks to the bottom of the water, and the buoyancy of the wood block is calculated