A square has an area of 10 square centimeters, so how long is the side

a*a=10
Then a = 3.162 cm

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1. A cylindrical container with a bottom area of 100cm2 and a height of 10cm has a pressure of 1200pa on the tabletop after it is filled with water. Now a metal block is suspended by a spring dynamometer and gently immersed in water. When the metal block is immersed in water and stationary, the indication of the spring dynamometer is 4.8n. After the metal block is slowly taken out, the pressure of the container on the tabletop is 1140pa. (take g = 10N / kg) When submerged, the pressure of water on the bottom of container; (2) buoyancy of metal block; (3) density of metal block
2. A cylindrical container with a bottom area of 100cm ^ 2 and a height of 10cm has a pressure of 1200pa on the table after it is filled with water When the metal block is immersed in the water and is still, the indication of the spring dynamometer is 4.8n. After the metal block is slowly taken out, the pressure of the container on the table is 1140pa. (g = 10N / kg) 1. Gravity of container 2. Buoyancy of metal block 3. Density of metal block
3. The bottom area of a cone-shaped beaker is 100cm2. When the beaker is filled with water, the height from the water surface to the bottom of the beaker is 10cm, and the pressure on the table is 0 The bottom area of a cone-shaped beaker is 100cm2. When it is full of water, the height from the water surface to the bottom of the beaker is 10cm, and the pressure on the table is 780p. Now a metal block is suspended by a spring dynamometer, and it is gently immersed in the water. When it is completely immersed, the indication of the spring dynamometer is 4.7n, and then the metal block is slowly taken out, and the pressure of the beaker on the table is reduced to 720p 1. Is there any change in the pressure of water on the bottom of the cup before and after the metal block is immersed in water? How much P is each? 2. If we know that P iron = 7.9g/cm3, P copper = 8.9g/cm3, p aluminum = 2.7, P cast iron = 7, what kind of metal is the metal block made of?
4. As shown in the figure, the weight of the cylindrical container placed on the horizontal table is 5N, and the bottom area is 100cm2. When the container is filled with a certain liquid, the pressure at point a in the container is 2.4 × 103pa, then the pressure of the liquid on the bottom of the container is______ PA, the pressure of the container on the horizontal table is______ Pa．
5. As shown in the figure, the closed container filled with water is placed on the horizontal table, and the ratio of the upper and lower bottom areas is 4:1. At this time, the pressure of water on the bottom of the container is f, and the pressure is p. when the container is placed on the horizontal table after being inverted, the pressure and pressure of water on the bottom of the container are () A. F，PB. 4F，PC. 14F，PD. F，4p
6. As shown in the figure, a square metal block with a side length of 0.1M is placed on a table with an area of 1m2. When the reading of the spring scale is 10N, the pressure of the metal block on the table is 4 × 103pa, then the density of the metal block is () A. 5×103kg/m3B. 4×103kg/m3C. 3×103kg/m3D. 2×103kg/m3
7. When the reading of the spring scale is 10N, the pressure of the metal block on the table is 4000Pa A square metal block with a side length of 0.1M is placed on a table with an area of 1m2. When the reading of the spring scale is 10N and the pressure of the metal block on the table is 4000Pa, what is the density of the metal block?
8. As shown in the figure, half of the square metal block with a side length of 0.1M is placed on the horizontal table with an area of 1m2, and the size of the metal block is small As shown in the figure, half of the square metal block with side length of 0.1M is placed on the horizontal tabletop with an area of 1m2, and the density of the metal block is 5 × 103kg / m3. When the pressure of the metal block on the tabletop is 4 × 103pa, the indication of the spring dynamometer is n.
9. A square metal block with a side length of 0.1M and a mass of 10kg is placed in the center of a horizontal desktop with an area of 1 square meter, and the metal block is pushed horizontally by 12n Liya How much pressure does the metal block exert on the table? (g = 10)
10. The side length of a square block is 10 cm. Put it on a horizontal table and calculate its pressure on the table (it is known that the density of wood block is 0.6 * 10 cubic n / kg; g = 10N / kg)
11. A square has an area of 10 square centimeters. What is the side length of the square
12. The area of a square is 10 square centimeters. How long is the side? Don't let me open the root!
13. The side length of the first square is 10 cm longer than that of the second square, and its area is 400 cubic cm larger than that of the second square?
14. A uniform cube with 100N weight and 20cm side length is placed in the middle of the horizontal square small desktop. If the side length of the small desktop is 10cm, the pressure of the cube on the desktop is zero______ The pressure is______ ．
15. A cube with a gravity of 100 N and a side length of 20 cm is placed in the center of the experimental small square table. If the side length of the small square table is 10 cm, the pressure of the cube on the table is 0______ If the side length of a small square table is 50 cm, the pressure of the cube on the table is 0______ It's a handkerchief
16. A square solid iron block with a side length of 10 cm is placed in the center of the horizontal desktop with an area of 0.5 square meters Find the pressure and pressure of the iron block on the horizontal table
17. A 64cm long iron wire is cut into two sections, and each section is folded into a square. If the sum of the two squares is equal to 160cm2, the side lengths of the two squares are______ ．
18. A round flower bed with a perimeter of 25 or 12 meters. How many square meters does this flower bed cover?
19. The perimeter of a round flowerbed is 18.84 meters. How many square meters is the area of the flowerbed? One of the students in the above question is like this. (18.84 △ 2) × (18.84 △ 3.14 △ 2). Is he right? Please explain the reason
20. The length of a cylindrical granary is 12.56 meters, so how many square meters does the granary cover?