The perimeter of a square is 4 / 7 meters. How many square meters is its area

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• 1. The side length of a square steel plate is C decimeter, and its circumference is C decimeter______ Decimeter, area is______ Square decimeter
• 2. The area of a square is 25 square decimeters. How many decimeters is its side? What is its perimeter?
• 3. A square is 15 cm long and 9 cm wide. The perimeter of the square is equal to that of a square. What is the area of the square
• 4. The perimeter of a square is 8 / 9 meters. What's its area?
• 5. The perimeter of a square is eight ninths of a meter. How many square meters is its area? It must be calculated!
• 6. What is the area of a square steel plate, 8 / 15 of its circumference
• 7. 12+1+112+2+212+… +4912+50．
• 8. Who can help me write an article about library rules and regulations If your uncle opened a library. Usually, people who borrow books don't line up to borrow books, don't keep quiet, don't cherish books, and bring food and drink to the library. Please write some rules and regulations for him. No less than 7 sentences
• 9. There is a series of numbers, 2, - 3,2, - 3,2, - 3. According to this rule, what is the number 2012
• 10. A complete translation of unit 1 section a 3A in Grade 9
• 11. The perimeter of a square board is 4 / 7 meters. How many square meters is the area of the square board?
• 12. The perimeter of a square disposable tablecloth is 7.2 meters, how many square meters is its area?
• 13. The side length of a square is 5 meters in 6 parts, its perimeter is () meters, and its area is () square meters fast
• 14. The side length of a square is 5 / 12 meters. How many meters is its perimeter and how many square meters is its area?
• 15. The perimeter of a square is 20 decimeters, and its side length is 20 decimeters______ Decimeter, area is______ Square decimeter
• 16. 1. The side length of a square is two seventh of a meter, its perimeter is () decimeter, and its area is () square decimeter 1. The side length of a square is 2 / 7 decimeters, its perimeter is () decimeters, and its area is () square decimeters. 2, 1.2 are more than its reciprocal. 3. There is a basket of apples. After two-thirds of the apples are sold, another 4kg is sold. At this time, there are still 16KG left. This basket of apples is originally () kilogram
• 17. The side length of a square is increased by 5cm, and the area is increased by 125cm2______ ．
• 18. When the side length of a square increases by five centimeters, the area of the square increases by 225 square centimeters. What is the area of the original square? Don't make equations, write out how to answer in detail (because XXX, so 5 + 6 = 11), and don't miss a step. Because I will take the exam in half an hour, the sooner the better!
• 19. If a square increases its side length by 4cm, the area of the new square will be 112 square centimeters larger than that of the original square. What is the side length of the original square?
• 20. If the side length of a square is increased by 5 cm, the area will be increased by 95 square cm______ Cm