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As shown in the figure, a rectangular lawn is 20 meters long and 14 meters wide, with a zigzag path 2 meters wide in the middle
The area of the road is (20 + 14) × 2 - 2 × 2 = 64 square meters
A rectangular lawn (see the shadow in the figure) is twice as long as wide. It is surrounded by a 1-meter-wide path with a total area of 34 square meters. The area of the lawn is___ Square centimeter
Let the width of lawn be x meters, then the length is 2x meters, 2 × [(2x + 2) × 1] + 2 × x × 1 = 34, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 2 × [2x + 2] + 2x = 34, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp
If a 1m wide straight path is built on a lawn with length of AM and width of BM, the area of the remaining lawn can be expressed as______ M2; now in order to increase the aesthetic feeling, the path is changed into a curved path with a width of 1m (as shown in the figure), and the remaining lawn area is______ m2．
The area of the remaining lawn is a (B-1) if its length is a and its width is (B-1); the area of the remaining lawn is a (B-1) if its length is a and its width is B-1
RELATED INFORMATIONS
- 1. If a 1m wide straight path is built on a lawn with length of AM and width of BM, the area of the remaining lawn can be expressed as______ M2; now in order to increase the aesthetic feeling, the path is changed into a curved path with a width of 1m (as shown in the figure), and the remaining lawn area is______ m2．
- 2. As shown in the picture, on a rectangular grassland 80 meters long and 40 meters wide, there is a curved stone path to calculate the area of grassland (the horizontal width of the path is 1 meter anywhere)
- 3. On a rectangular grassland, there is a curved asphalt path (the shaded part in the picture indicates the path, and the horizontal width of the path anywhere is 2 length units). Please guess the area of the grassland? Write the formula and the answer
- 4. 8 / 7m is 2 / 1m longer than a few parts
- 5. A circular flower bed is to be built in the center of a park. The area of the flower bed is 800 square meters. Xiao Fen estimated that its radius is about () (the error is not less than 1m) A circular flower bed is to be built in the center of a park. The area of the flower bed is 800 square meters. Xiao Fen estimated that its radius is about () (the error is not less than 1m)
- 6. A rectangular grassland is 16 meters long and 10 meters wide, with a stone road 2 meters wide paved in the middle. How large is the area of grassland? Horizontal shop
- 7. As shown in the figure: to build a road with the same width on a rectangular green space with a length of 100 m and a width of 90 m, and the total area of six green spaces is 8448 m2, the width of the road is___ ．
- 8. To build the same width Road on the rectangular ground with the width of 20m and the length of 30m, the remaining part of the lawn should be planted to make the lawn area 504cm square, how many meters is the width of the road
- 9. As shown in the picture is a rectangular grassland, 16 meters long and 12 meters wide, with a road 2 meters wide in the middle. Calculate the area of grassland (shadow part)
- 10. The area of a rectangular grassland is 100 square meters. After reconstruction, the length of the grassland will increase to three times of the original. What is the area of the grassland after reconstruction
- 11. There is a rectangular lawn, which is 15 meters long and 9 meters wide. There is a 2 meter wide path in the middle. How about the area of the lawn?
- 12. There is a rectangular grassland in a residential area (as shown in the figure), 18 meters long and 10 meters wide, with two even paths in the middle. The actual area of grassland is calculated
- 13. A 55 meter long and 45 meter wide rectangular green space is built with two mutually vertical paths of the same width in the middle, and the rest can be used for greening, with an area of 2000 square meters
- 14. In the middle of a 55 meter long and 45 meter wide rectangular green space, two vertical paths of the same width will be built. The remaining area that can be used for greening is 2000 thousand square meters Find the width of the path It's 2000 square meters
- 15. The nine small squares with the side length of 2 cm are arranged into a big square. The perimeter of the big square is () A. 24 cm B. 36 cm C. 38 cm
- 16. Two identical rectangles, 9 cm in length and 6 cm in width, are stacked together. What is the circumference of the figure?
- 17. Remove the largest square from a rectangle with a circumference of 40 cm, and the circumference of the remaining figure is 24 cm
- 18. Cut the largest square from a rectangle 10 cm long, and the perimeter of the remaining figure is () cm
- 19. There are two identical rectangular pieces of paper, 8 cm in length and 3 cm in width. If you stack them together as shown in the figure, what is the perimeter of the figure
- 20. As shown in the picture, in a piece of square paper with a side length of 10 cm, cut out a square with a length of 6 cm and a width of 4 cm. What is the area of the remaining part? What's the perimeter of the rest?