The length of the foundation is 2A & nbsp; m and the width is (2a-24) m. A is used to represent the area of the foundation, and the area of the foundation is calculated when a = 25

According to the meaning of the question, the area of the foundation is: 2A · (2a-24) = (4a2-48a) m2; when a = 25, 4a2-48a = 4 × 252-48 × 25 = 1300m2

RELATED INFORMATIONS

1. If the length of a rectangle remains unchanged and its width increases by 4 meters, it will become a square and its area increases by 36 square meters. What is the area of the original rectangle?
2. The width of a rectangular garden is increased by four meters. The area is increased by 48 square meters. The increased rectangle becomes a square. Find the original garden area
3. Use 60 cm long wire to make a long rectangle with a width ratio of 3:2. What's the area of the rectangle?
4. 121 / 49th of the square of x = 0
5. How many squares equals 121!
6. -What is the sum of the square of the difference of 10 minus 5 plus five times of the opposite number of 2 / 5? Please explain the formula
7. If the square of an ellipse x divided by the square of a plus the square of Y is equal to 1, and there is a point P on the ellipse so that its angle to two focal points E and F is 90 degrees, then the eccentricity of the ellipse is determined Range
8. 2X (1 + 3) (quadratic of 1 + 3) (quartic of 1 + 3) (octave of 1 + 3) + 1, please
9. 27 = the square of 4x
10. Calculate the square of (3 √ 2) + the square of √ 9 - (√ 8) - (√ 2 - √ 3) °
11. How many square meters is 600 meters long and 240 meters wide? How much is 25 yuan per square meter?
12. What's the square of 11, what's the square of 12, what's the square of 25
13. How can X-1 be equal to X-1
14. How much is the quadratic power of X multiplied by the quadratic power of Y Thank you Is it equal to the fourth power of XY
15. What is x squared times y squared
16. How to measure the full length of a coil of thin copper wire with a balance and ruler
17. It is now required to estimate the total length of a coil of bare wire (3 types) without pulling apart the coil of copper wire but cutting off a section of copper wire
18. How to use common learning stationery to measure the diameter of thin copper wire? (write the use of stationery, measurement method and the expression of the diameter of thin copper wire) Same as above, physical content
19. A student wants to measure the diameter of a straight thin copper wire. His experimental steps are as follows: A. Measure the length L1 of the thin copper wire with a scale; B. The thin copper wires are tightly arranged and wound on the pencil rod for several circles; C. Measure the total length L2 of the copper wire coil on the round pencil rod with a scale (as shown in the figure); D. Count the number of turns n of the thin copper wires on the pencil rod E. Divide the length of copper wire L1 by the number of turns of copper wire n to get the diameter of thin copper wire D; (1) In the above steps, the wrong and unnecessary steps are (fill in letters) (2) The error step is corrected to: ■ (3) This method can also be used as an example
20. How to measure the diameter of a thin copper wire with length L The tool is a round pencil rod