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The sum of the edges of a cube is 48 cm, and its volume is () cubic cm A. 64 cubic centimeter B. 64 square centimeter C. 64 centimeter
48 △ 12 = 4 (CM) 4 × 4 × 4 = 64 (cubic cm) a: the volume of this cube is 64 cubic cm
The surface area of a cube is reduced ()
The surface area of a small cube is 2 * 2 * 6 * 8 = 192cm & # 178;
If the edge length of the new cube is 2 + 2 = 4cm, the area of the new cube will decrease
4*4*6=96cm²
The area decreased by 192-96 = 98cm & # 178;
There are eight identical cube blocks, each of which has an edge length of 3cm, forming a cuboid with a hole in the middle?
The cuboid is 3 * 3 = 9cm in length, 3 * 3 = 9cm in width and 3cm in height
The surface area of the cuboid is (9 * 9 + 9 * 3 + 9 * 3) * 2 = 270 square centimeters
There are eight same cube building blocks, each of which is 3cm long. They are assembled into a cube with a hole in the middle, and the surface area ^ o of the cuboid is calculated^
The surface area is the sum of all the original surface areas minus the area of 16 overlapping surfaces
The solving process is: 3 * 3 * 6 * 8-3 * 3 * 16 = 384cm ^ 2
The surface area of a cuboid is () square centimeter?
A. .5B. 10C. 25D. 250
5 × 5 × 2 + 5 × 10 × 2 + 5 × 10 × 2 = 50 + 100 + 100 = 250 (square centimeter); answer: the surface area of this cuboid is 250 square centimeter
The surface area of this cuboid is () square centimeter, and its volume is ()
A cuboid is made up of two small cubes whose edges are 2 cm long. The cuboid has a surface area of (40) square cm and a volume of (16)
Surface area 2x2x (12-2) = 4x10 = 40 cm2
Volume 2x2 = 16 CC
How many cuboid blocks does it take to make a cube with the same cuboid
The least common multiple of 12,8,5 is 120120 / 12 = 10 120 / 8 = 15 120 / 5 = 24, and the required quantity is 10 * 15 * 24 = 3600 pieces
How many cuboids do you need to make a cube with a cuboid 8 cm long, 6 cm wide and 4 cm high?
The least common multiple of 8,6,4 is 24
So the edge length of a cube is 24 cm
How many cuboids at least
(24 / 8) × (24 / 6) × (24 / 4) = 72
A cuboid box measures 6dm in length, 4dm in width and 5DM in height from the inside. If the square volume block with the edge length of 2DM is put into the box (it is required that the building block can not be exposed from the box), it can be filled at most______ Block
6 / 2 = 3 (block), 4 / 2 = 2 (block), 5 / 2 = 2 (block) 1 decimeter, so the maximum can hold: 3 × 2 × 2 = 12 pieces. A: the maximum can hold 12 pieces. So the answer is: 12
How many cuboids with 2 cm edges can be placed in a cuboid box 8 cm long, 4 cm wide and 6 cm high?
8 × 4 × 6 △ 2 × 2 = 192 △ 8 = 24
RELATED INFORMATIONS
- 1. To cut a cuboid into the largest cube, how long is its edge? It is 12 cm long, 6 cm wide and 8 cm high
- 2. How many square centimetres does the surface area of the cuboid decrease after the cuboid is lined up What's the square percentage? Yes, there will be an extra reward
- 3. The toy factory produced 2500 more children's toys in May than in April, 4 / 5 more. How many children's toys did the toy factory produce in April? Mingzhu power plant burned 24000 tons of coal in October, 1 / 4 less than that in September. How many tons of coal was burned in September?
- 4. A pyramid geometry is composed of several cubes, and the construction method is as shown in the figure. The four vertices of the lower bottom surface of the upper cube are the midpoint of each side of the upper bottom surface of the lower cube. It is known that the edge length of the lowest cube is 2, and the surface area of the pyramid (including the bottom area of the lowest cube) is more than 39, then the number of cubes in the pyramid is at least () A. 4B. 5C. 6D. 7
- 5. Put two cubes of the same size together. Guess how many faces there are now. If you put three cubes together?
- 6. Paint the six sides of a cube shaped building block, and then saw them into 64 small blocks of the same size. How many pieces are there on one side, two sides, three sides and none?
- 7. Xiaomin has 80 cube blocks with the edge length of 1cm. He wants to cut these blocks into a cube with the largest volume. He can use () blocks at most
- 8. There are several different ways to make a large cuboid with 8 small cube blocks with the edge length of 2cm? For example, length: 16; width: 2; height: 2; volume: 64; surface area: 136
- 9. The side area of each cylinder below is calculated. The perimeter of 1 bottom surface is 3.14dm, the height is 5DM, the diameter of 2 bottom surface is 4cm, the radius of 3 bottom surface is 5DM, and the height is 4dm 14 DM, 5 DM high, 4 cm diameter, 5 DM radius and 4 DM high
- 10. The ladder AB is against the wall. The distance from the bottom a of the ladder to the wall root o is 2m, and the distance from the top B of the ladder to the ground is 7m. Now move the bottom a outward to a ', so that the distance from the bottom a' to the wall root O is 3M, and the top B drops to B ', so BB' is equal to 1m?
- 11. The edge length of a cube is 5cm, and four such cubes are used to form a large cuboid. The surface area of a large cuboid may be () square centimeter or () square centimeter The edge length of a cube is 5cm. Four cubes are used to form a large cuboid. The surface area of a large cuboid may be () square centimeter or () square centimeter
- 12. Stack the cuboid building blocks 3 cm long, 2 cm wide and 1 cm high into the smallest cube. The cube edge length is () cm, and at least () blocks are needed
- 13. A person of 80 meters stands in front of the plane mirror. The height of his image in the mirror () the distance between people and images () if he walks forward 0.2 meters, the distance between people and images For () Fill in the blanks and explain
- 14. 8 meters, eyes 0.08 meters from the top of the head, standing in front of the vertical plane mirror, he wants to see the image of his feet Drawing
- 15. The solution of the equation a (x + m) &# 178; + B = 0 of X is X1 = - 2, X2 = 1, then the solution of the equation a (x + m + 2) &# 178; + B = 0 is X1 = - 2, X2 = 1
- 16. Calculate (a-b-c) (B + C-A) &# 178; (C-A + b) &# 179; (1) calculation of (a-b-c) &; (B + C-A) &; (C-A + b) &; (C-A + b) &; ⑵(-x)²•(-x)³+2x•(-x)∧4-(-x)•x∧4 ⑶x•x∧(m-1)+x²•x∧(m-2)-3•x³•x∧(m-3)
- 17. [(a + b) &# 178; - (a-b) &# 178; + 6A & # 178; B & # 179;] / (- 2Ab), where a = - 2, B = 1 If the circumference of △ DEF is 15, then the length of BC side is____
- 18. 1. (a-b) &# 178; (a-b) &# 178; (a-b) &# 178; (B-A) &# 178; (B-A) &# 178; (a + b) 178; (a-b) &# 178; (B-A) &# 178; (B-B) &# 178; (B-A) &# 178; (a + B) 178
- 19. A 12.56 decimeter long wire encircles a circle. How many square decimeters is the area of this circle
- 20. An isosceles trapezoid is formed by a 12.4 decimeter long iron wire. It is known that the two sides of the trapezoid are 6.4 decimeters long and the area is 9 square decimeters. What is the height of the trapezoid?