There are a batch of bricks, each of which is 45 cm long and 30 cm wide. At least how many such bricks can be used to make a square?

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• 1. There is a room that needs 700 pieces of square tiles with a side length of 2 decimeters. If you use square tiles with a side length of 2.5 decimeters, how many pieces do you need
• 2. To pave a room with a length of 9 meters and a width of 6 meters, how many decimeter square floor tiles are suitable? How many pieces are needed?
• 3. The side length of large tiles is 4 decimeters, and that of small tiles is 3 decimeters. The floor of a room is paved with large tiles, with 6 rows of 24 tiles in each row, How much will it cost
• 4. Xiaohua's room is 5.1 meters long and 3 meters wide. How many pieces do you need if you use 30 cm square tiles?
• 5. Xiaofang bought a new house, ready to lay tiles, his house is 85 square meters, tiles are 30 cm square, how many tiles do you need at least? What is the area of a piece?
• 6. To replace the floor tiles for the room, we used to use square tiles with a side length of 15 cm, a total of 1000 pieces. Now we need to replace them with large square tiles with a side length of 25 cm, which needs to be replaced How many such tiles?
• 7. The area of Xiaowen's room is 10.8m2. The floor of the room happens to be paved with 120 identical square tiles. What is the side length of each tile?
• 8. The area of Xiaowen's room is 10.8m2. The floor of the room happens to be paved with 120 identical square tiles. What is the side length of each tile?
• 9. In a room with an area of 12 m2, lay a square floor tile with a side length of 14 cm. How many such tiles do you need at least? Why do you do this?
• 10. Lay 14cm square floor tiles in a room with an area of 12 m2. How many such tiles are needed
• 11. There are a batch of bricks, each of which is 45 cm long and 30 cm wide. At least how many such bricks can be used to make a square?
• 12. There are a number of floor tiles, each 45 cm long and 30 cm wide. At least how many such tiles can be used to make a square
• 13. A kind of rectangular floor tile is 36 cm long and 24 cm wide. How many floor tiles do you need to make a square with this kind of floor tile? What's the area of a square?
• 14. There is a rectangular floor tile 48 cm long and 28 cm wide. If you cut it into a square with the same side length and area, there is no surplus. How many pieces can you cut at least? If you use it to pave a square floor, how many such tiles are needed at least
• 15. There is a 48 cm long, 28 cm wide rectangular floor tile, if you use it to lay a square floor, then at least a few pieces The teacher said it wasn't 84
• 16. A kind of rectangular floor tile, 45 cm long and 30 cm wide. How many floor tiles do you need at least to make a square
• 17. There is a rectangular floor tile, each 45 cm long, 30 cm wide, at least how many such floor tiles can be paved into a square?
• 18. How many floor tiles do you need to make a square with a rectangular floor tile 45 cm long and 30 cm wide?
• 19. Use side length (whole decimeter)______ Decimeter______ Decimeter______ Decimeter square can be just covered with 16 decimeter long, 12 decimeter wide rectangle
• 20. Use a rectangular tile that is 8 decimeters long and 6 decimeters wide to pave the floor. To pave a square, how many decimeters is the side length of the square at least? How many tiles were used?