What is the area of a square steel plate, 8 / 15 of its circumference
Side length of square: 8 / 15 △ 4 = 2 / 15
Area: 2 / 15 × 2 / 15 = 4 / 225
RELATED INFORMATIONS
- 1. 12+1+112+2+212+… +4912+50.
- 2. 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
- 3. There is a series of numbers, 2, - 3,2, - 3,2, - 3. According to this rule, what is the number 2012
- 4. A complete translation of unit 1 section a 3A in Grade 9
- 5. What are the common factors of 42 and 49
- 6. Articles about sunflowers It's not necessary to express one's ambition by describing the appearance and color. It's not too literary. It's just ordinary composition
- 7. Uncle Li raised 600 chickens and raised 1 / 5 more ducks. How many ducks does Uncle Li raise?
- 8. In autumn, the grass in the field is still (), () like ()
- 9. (30 18:34:42) It is known that the first term A1 = 1, tolerance D is greater than 0, and the second term, the fifth term and the fourteenth term of an arithmetic sequence are the second term, the third term and the fourth term respectively (1) (2) let BN = 1 / N (an + 3) & # 160; (n belongs to n *), Sn = B1 + B2 + B3 + ·· BN to find SN
- 10. Seventh grade mathematics volume I p38 exercise 1.4, 4, 6,
- 11. The perimeter of a square is eight ninths of a meter. How many square meters is its area? It must be calculated!
- 12. The perimeter of a square is 8 / 9 meters. What's its area?
- 13. 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
- 14. The area of a square is 25 square decimeters. How many decimeters is its side? What is its perimeter?
- 15. The side length of a square steel plate is C decimeter, and its circumference is C decimeter______ Decimeter, area is______ Square decimeter
- 16. The perimeter of a square is 4 / 7 meters. How many square meters is its area
- 17. The perimeter of a square board is 4 / 7 meters. How many square meters is the area of the square board?
- 18. The perimeter of a square disposable tablecloth is 7.2 meters, how many square meters is its area?
- 19. The side length of a square is 5 meters in 6 parts, its perimeter is () meters, and its area is () square meters fast
- 20. The side length of a square is 5 / 12 meters. How many meters is its perimeter and how many square meters is its area?