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A square nursery covering an area of 1 hectare will be lengthened by 100 meters on each side, and the nursery area will be increased______ Hectare
1 hectare = 10000 square meters, then the side length of the original square is 100 meters, (100 + 100) × (100 + 100) - 10000, = 40000-10000, = 30000 (square meters), 30000 square meters = 3 hectares
A square flower garden with an area of 1 hectare, if its side length is reduced by 20 meters, how much will its area be reduced
For a square flower garden with an area of 1 hectare, if its side length is reduced by 20 meters, how much will its area be reduced? Is that right? Just multiply 20 by 20?
10000-6400 = 3600 reduce 3600 square meters
A right triangle with an angle of 30 degrees and an area of 20 square centimeters, find the side length of the hypotenuse
Let the shortest side be x, then the hypotenuse is 2x, and the other right side is root sign 3 * X. from the area of triangle, we can get x, hypotenuse is 2x
RELATED INFORMATIONS
- 1. If the ratio of the right side to the hypotenuse of a right triangle is 2:3 and the length of the hypotenuse is 20, the area of the triangle can be obtained
- 2. If the height of the hypotenuse of a right triangle divides the hypotenuse into two parts with lengths of 4 and 9, what is the area of the right triangle? A.38B.39C.40D.41
- 3. How to prove that the sum of the reciprocal of the squares of the two right sides of a right triangle is equal to the reciprocal of the high square on the bottom side
- 4. Given that the sum of the three sides of a right triangle is a + B + C = 2 and C is the hypotenuse, the maximum area of a right triangle can be obtained
- 5. The difference between two right sides of a right triangle is 7cm, and the area is 30cm 2
- 6. The difference between two right sides of a right triangle is 7cm, and the area is 30cm 2
- 7. The length of the three sides of a right triangle is 3, 4 and 5 cm respectively. The height of the hypotenuse of the triangle is () cm
- 8. For a triangle ABC, the height AE on the bottom edge BC is 3.2 cm long. Now the bottom edge is increased by 20 cm. How many square centimeters does the area increase?
- 9. The area of a triangle is 18.2 square centimeters, and the length of its bottom is 10.4 centimeters. What is the height of this side
- 10. If the hypotenuse of an isosceles right triangle is 18 cm long, how many square centimeters is its area?
- 11. What is the area of a 100 meter square______ The area of a square with a side length of 1000 meters is______ ．
- 12. The side length is 100 meters square, its area () square meter, namely () hectare
- 13. A square nursery covers an area of 1 hectare. If the side length of the nursery is increased by 100 meters, how many hectares will the nursery area be increased?
- 14. The school has a rectangular flower bed, 8 meters long. When the campus is built, the length of the flower bed is reduced by 3 meters, so the area of the flower bed is reduced by 18 square meters
- 15. In the park, there are two flower beds with equal perimeter. The rectangular one is 40 meters long and 20 meters wide. How about the area of the other square one?
- 16. A square flower bed, side length is 15 meters, how many meters is its perimeter
- 17. The perimeter of a rectangular piece of land is 80 meters, and the ratio of its length and width is 3:2. How many square meters is the area of this rectangular piece of land?
- 18. Hope primary school has a rectangular flower bed. When it was built, the length and width of the flower bed were increased by 3 meters, and the area of the flower bed was increased by 60 square meters______ Rice
- 19. The bottom of a trapezoid is 18 cm. If the bottom is shortened by 8 cm, it will become a parallel 4 deformation and the area will be reduced by 28 square cm. The original area is? Formula to explain the reason. Thank you! Why use 28 / (8 / 2) what does 8 / 2 mean? Thank you for being clear
- 20. A rectangle 15 cm long and 9 cm wide is reduced by 1:3, and the area of the figure is______ Square centimeter