Cut a cube carton along the line as shown in the figure and expand it into a plane view. The shape of the expanded view is () A. B. C. D.

As shown in the figure, it is cut along the cutting line in the right figure. The top, right and bottom surfaces are connected. The front, left and back surfaces are connected, and the bottom surface is connected with the back. It is the "3 3" structure of the square expansion

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1. How to draw the expanded drawing of 11 sides of cube
2. How many are the expanded drawings of cube? Name them and send them pictures
3. How many kinds of unfolded cube without cover are there? Please draw a more detailed picture! Thank you!
4. What shape pattern might the cross section of a cube be
5. What figure might the cross section of a cube be
6. What are the shapes of the section of a cube Please complete the answers separately
7. If a cube is intercepted by a plane, what kind of figure can't the shape of the cross section be? A square B triangle C trapezoid D circle why?
8. The section figure of a cube can be several sides Solid geometry of senior two
9. We often see floors with patterns as shown in the figure. They are all made of square shaped materials or hexagonal shaped materials. In this way, the materials can be paved into a flat and void free floor (1) If the floor is paved as above, can it be made of pentagonal materials? Why? (2) Can you come up with another plan to use a polygonal (not necessarily regular polygonal) material to lay the floor? Draw a sketch of your plan. (3) please draw a sketch of two different regular polygon materials
10. As shown in the figure, divide a piece of land into four groups to plant, with the same shape and size (each piece has the same number of points), how to divide it?
11. Three dimensional drawing of cube When drawing a three-dimensional figure of a cube, what should the top and bottom surfaces be drawn? The horizontal side length is the same as the actual side length. How much is the vertical side length drawn as the actual side length?
12. A geometry is made up of small cubes of the same size. The shape of the geometry seen from above is as shown in the figure. The number in the small square represents the number of small cubes in the position. Please draw the shape of the geometry seen from the front and from the left
13. Build a geometry with a small cube so that it can be seen from the front and from the top as shown in the figure. Is there only one geometry like this? How many cubes does it need at most? How many cubes does it need at least? Please draw the figure from the left in both cases
14. Use several small cubes of the same size to build a geometry. The shape of the geometry seen from the front and above is as shown in the figure. According to the geometry you built, draw its shape from the left. Can you build other geometry that meets the conditions?
15. As shown in the figure below, the area of a square is 2 square decimeters, and the area of a circle is calculated
16. As shown in the figure below, the area of a square is 2 square decimeters, and the area of a circle is calculated
17. As shown in the figure below, the area of a square is 2 square decimeters, and the area of a circle is calculated
18. Draw the largest circle in a square. What is the ratio of the area of the circle to that of the square
19. In the figure below, there is the largest circle in the square. The known area of the circle is 60 square meters. What is the area of the square? 10fenzong
20. There is a biggest circle in the square. The area of the circle is 60 cm. What is the area of the square