A rectangular flower garden is 20 meters long and 15 meters wide. One side is against the wall, and the other three sides are fenced. At least how many meters of fence is needed?

There are only two possibilities for this problem. One is 20 against the wall, and the other is 15 against the wall
20 the length against the wall is = 20 + 15 * 2 = 50
15 the length against the wall is = 15 + 20 * 2 = 55
So it needs at least 50 meters

RELATED INFORMATIONS

1. I want to describe the beautiful passage of peony! To metaphor, personification, the introduction of a little more specific, write must be good
2. A beautiful piece of peony
3. The perimeter of a circular flower bed is 50.24 meters. There are four different kinds of flowers, and the average area of each flower is more than 100 square meters?
4. The perimeter of a circular flower bed is 50.24 meters. There are three kinds of flowers in the flower bed. The planting area of peony accounts for about 1 / 5 of the total area, and the planting area of lily is the same as that of peony Like peony, the rest grow roses. What's the planting area of roses?
5. The perimeter of a circular flower bed is 50.24 meters, in which 18 areas are reserved for planting chrysanthemums. What is the floor area of chrysanthemums?
6. The area of a piece of land is about 34 hectares, including 14 kinds of roses, 25 kinds of tulips, and the rest are rhododendrons. What percentage of the total area is Rhododendron?
7. The florist bought chrysanthemum, rose and tulip. The florist has 78 chrysanthemum, rose and tulip. Among them, chrysanthemum is more than twice as much as rose, four are more than tulip, and rose is three times as much as tulip There are 78 chrysanthemum, rose and tulip in the florist. Among them, chrysanthemum is more than 2 times of rose and rose is 3 times of tulip and less than 2. How many of these three kinds of flowers are there
8. There is a square flower garden with a side length of 28.15 meters. A fence is inserted around the garden. How long is the fence?
9. Can a 120m long fence be used to form a rectangular flower bed with an area of 901 square meters
10. A rectangular flower garden is 14 meters long and 10 meters wide. ①: how many meters of fence is needed to fence around the flower garden. ②: if a one meter wide fence is built around the flower garden A rectangular flower garden is 14 meters long and 10 meters wide. ①: how many meters of fence is needed to fence around the flower garden. ②: if a 1 meter wide path is built around the flower garden. How many square meters is the area of the path?
11. A rectangular flower bed with one side against the wall, 8 meters long and 6 meters wide, should be fenced on the other three sides. How long does the fence need? At least how many meters?
12. There is a fence with a length of 24 meters and a wall (the maximum usable length of the wall is 9 meters) is used to form a rectangular flower bed with a fence in the middle. The width ab of the flower bed is x meters and the area is s square meters 1) Find the functional relationship between S and X and the value range of the independent variable x; 2) Find the maximum value of S and what is the value of X at this time?
13. How to fence a 160 square meter rectangular flower garden with a 36 meter fence (18 meters long) on one side? Solve quadratic equation with one variable!
14. A 20 meter fence is used to form a rectangular flower garden. The side of the wall is x, and the area of the rectangle is y 1) Write the function analytic expression of Y with respect to X; 2) What is the area of the rectangle when x = 3? To be right, it must be right
15. The first group of students surrounded a rectangular garden with a fence. The fence on one side was 6 meters long. The second group of students surrounded a square garden with an area of 49 square meters with a fence of rectangular perimeter. How many meters is the perimeter of the square fence? Which is bigger than the area product of the square
16. A rectangular lawn, with an area of 120 square meters, has the same length and twice the original width. What is the expanded area?
17. The ratio of length to width of a rectangular garden is 5:3. It is known that the ratio of length to width is 120m more. How many square meters is the area of this garden?
18. The ratio of length to width of a rectangular garden is 5:3. It is known that the ratio of length to width is 120m more. How many square meters is the area of this garden?
19. There are three kinds of flowers in the garden: Rose, rose and jasmine. It is known that the number of rose and rose is 2:3, and the mathematical ratio of rose and jasmine is 5:4 If we reduce the number of jasmine by 20, there will be as many as roses. How many roses are there?
20. A semi-circular flower bed with a diameter of 4 meters is planted with roses and lilies. It is known that the area ratio of the two kinds of flowers is 1:3. How many square meters are the planting areas of the two kinds of flowers?