Use the equation to solve: the circumference of a rectangle is 120 meters, and the length is 1.5 times of the width. How many square meters is the area of the rectangle?

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• 1. The perimeter of a rectangle is 24cm, the ratio of length to width is 5:3, and the area of a rectangle is () square meters?
• 2. The perimeter of a rectangle is 24 meters, its ratio of length to width is 7:5, and its area is () square meters A. 35B. 240C. 140
• 3. A rectangle has a circumference of 240 meters and a length of 1.5 times the width. What is the area of the rectangle?
• 4. The perimeter of a rectangle is 80cm, and the ratio of length to width is 5:3. What is the area of the rectangle?
• 5. The circumference of a rectangle is 184cm, and its length is three times of its width. What is the area of a rectangle? emergency
• 6. The area of a square is 100 square centimeter. If you enlarge it by a ratio of 10:1, what is its area? How to calculate it
• 7. The picture is made up of four identical small squares, each of which is 100 square centimeters. You can draw a square with an area of 80 square centimeters in the picture (1) The picture on the right below is made up of four identical small squares. The area of each small square is 100 square centimeters. Now please draw a square with an area of 80 square centimeters in the picture and explain your method with pictures or words
• 8. It's a figure made up of four squares with an area of 100 square centimeters. Can you draw a square with an area of 80 square centimeters? chart
• 9. The area of a rectangle is 100 square centimeters. If the length is reduced by four times and the width is increased by four times, the rectangle will become a square, and the area of the square
• 10. The area of a trapezoid is 8 square centimeters. If its upper bottom, lower bottom and height are doubled, how many square centimeters is its area
• 11. The circumference of a rectangle is 30cm, in which the length is twice the width. What is the length and width of the rectangle?
• 12. Xinhua Bookstore delivered a batch of children's books, which sold 1800 in the first day, 19 more in the second day than in the first day, and the remaining 37 sold out in the third day?
• 13. The ratio of a and B is 5:2, a is 35, B is () On the map of scale 1:2000, the line segment of 7cm on the map represents the actual distance () M There is a kind of salt water, the ratio of salt and water is 1:10. How many kilograms of water is needed to make this salt water with 5.5 kilograms of salt The school uses the same square brick to pave the floor. It needs 120 square bricks to pave 5 square meters. According to this calculation, how many square bricks do you need to use to pave 32 square meters? (to be listed)
• 14. My mother said to me, "I'm going to work overtime tonight. Make your own dinner."
• 15. Make the function y = f (x) = 100, X is contained in the image of R, and find the detailed solutions of F (- 10), f (0), f (1000). Thank you
• 16. Mathematics problem: in the subject collection of the school library, Chinese books and foreign language books account for about 1 / 5, mathematics books account for about 1 / 10, history, geography and students books account for about 1 / 6, and the rest of the books are classified into other categories. According to these data, draw a fan statistical chart of the subject collection of the school library Note: there should be a detailed process, no process do not send
• 17. How to convert ml and G? Is 500 g equal to 500 ml?
• 18. Stock calculation A stock is a fixed growth stock with an annual growth rate of 5%. This year, it just received a dividend of 8 yuan, and the risk-free rate of return is 10%. The average rate of return of all stocks in the market is 18%, and the β value of the stock is 1.5, and the intrinsic value of the stock is () A、50.05 B、49.41 C、45.23 D．61.71
• 19. In an equilateral triangle ABC, P is a point on edge AB, q is a point on edge AC, and AP = CQ. The distance between point a and the midpoint m of line PQ is 19 cm, then the distance between point P and point C is? (draw the picture by yourself, the original question is this.) Note: there is no need to draw a picture when answering You can't assume it
• 20. Given that the domain of F (x) and G (x) is r, where f (x) is odd, G (x) is even, and f (x) + G (x) = 1 / (square of X + X + 1), then the range of F (x) / G (x) is? Why?