![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
A new cylindrical pool was dug in the orchard. The inner wall and bottom of the pool should be plastered with cement. The diameter of the bottom of the pool is 5 meters, and the depth of the pool is 1.5 meters. What is the area of plastering cement Give me the answer by 10:30. It's due tomorrow
If the diameter of the pool bottom is 5m, the area of the pool bottom is 3.14 * (5 / 2) ^ 2 = 19.625m2
Perimeter of pool bottom = 3.14 * 5 = 15.7m
Then the side area = 15.7 * 1.5 = 23.55 square meters
The area of plastering cement is 23.55 + 19.625 = 43.175 square meters
Dig a cylindrical pool with a bottom diameter of 4 meters and a depth of 2 meters. Plaster cement on the bottom and inner wall of the pool. 2.5 kg of cement per square meter. How many kg of cement do you need
After calculating the area of the bottom and the elevation, multiply by the amount of cement per square meter
=(3.14*2*2+3.14*4*2)*2.5
=94.2kg
Dig a cylindrical pool. The diameter of the bottom of the pool is 10 meters and the depth of the pool is 2 meters. Cement should be applied to the inner wall and bottom of the pool. How many square meters is the area of cement applied?
Radius = 10 △ 2 = 5m
Height = 2m
Plastering area
=Bottom area + side area
=3.14×5×5+3.14×10×2
=141.3 square meters
Dig a cuboid shaped pool which is 5 meters long, 4 meters wide and 2.5 meters deep. How many square meters is the area of the pool? If you want to plaster cement around and at the bottom of the pool, how many square meters is the area?
4 × 5 = 20 square meters
The pool covers an area of at least 20 square meters
(5 × 2.5 + 4 × 2.5) × 2 = 100 square meters
Answer: the area of plastering cement is 100 square meters
Dig a cuboid pool 8 meters long, 4 meters wide and 3 meters deep. How many square meters does it cover? How many cubic meters is the volume of the pool?
If 20 000 liters of water is injected into the pool, what is the height of the water?
1、
area covered
=8×4
=32 square meters
2、
volume
=8×4×3
=96 cubic meters
3、
Water height
=（20000÷1000）÷（8×4）
=20÷32
=0.625m
Dig a cuboid reservoir with a length of 3 meters, a width of 3 meters and a depth of 3.5 meters. How many square meters does the reservoir cover?
Seek the most exquisite answer and calculation process!
Floor area is volume
Length times width times height
8*3*3.5=24*3.5=84
A cuboid pool, 6 meters long, 3 meters wide, 3 meters deep, covers an area of______ And its volume is______ ．
6 × 3 = 18 (square meters); 6 × 3 × 3 = 54 (cubic meters); answer: the floor area is 18 square meters, its volume is 54 cubic meters. So the answer is: 18 square meters, 54 cubic meters
A cuboid pool is 3.8 meters long, 2.5 meters wide and 1.2 meters deep. What is the floor area of the pool?
A cuboid pool is 3.8 meters long, 2.5 meters wide and 1.2 meters deep. What is the floor area of the pool? First come, first served ~ if you are slow, I will offer a reward and give it to others~
3.8 × 2.5 = 9.5 square meters
So this pool covers an area of 9.5 square meters
It's a cuboid, 6 meters long, 4 meters wide and 1.5 meters deep. What's the floor area of this pool?
Area: 6 * 4 = 24 (M2)
Volume: 6 * 4 * 1.5 = 36 (M3)
Dig a cuboid reservoir so that it is 4 meters long, 2.5 meters wide and 1 meter deep. What is the area of the reservoir?
The side area is 4 × 1 × 2 + 2.5 × 1 × 2 = 8 + 5 = 13 m2
The bottom area is 4 × 2.5 = 10 m2
The area of plastering cement is 13 + 10 = 23 m2
RELATED INFORMATIONS
- 1. A cuboid reservoir is 20 meters long, 12 meters wide and 1.5 meters deep. How many square meters does the reservoir cover? If a tree is planted every 1 meter around the reservoir, at least how many trees should be planted?
- 2. A reservoir is 30 m long, 15 m wide and 2 m deep. If water of 1.5 m depth is injected into the reservoir, how many cubic meters of water are needed? Please help me, great Xia ~ ~ list the formula ~ ~ ~ thank you ~ ~ ~ it's urgent~~~
- 3. A reservoir is 8 meters long, 5 meters wide and 3 meters deep. ① how large is the area of the reservoir? ② how large is the area of cement plastered on the bottom and around the reservoir? ③ how many liters of water can the reservoir store at most?
- 4. 1. If the solution set of inequality 3 / 1 (x-m) > 2x-m is x < 2, then M=_____ 2. When x takes what value, the value of algebraic formula 2-2x is not less than the value of 3 [X-2 (x-1)]
- 5. Given that | a | = 2, B = - 7, the opposite number of C is - 5, find the value of the algebraic formula a + (- b) + (- C)
- 6. A is x, B is y, the difference between the squares of a and B
- 7. If a = 3 ^ 4, B = 4 ^ 3, use the algebraic formula containing a and B to express 12 ^ 12
- 8. Express the rule of 1.2.4.8.16.32. With algebraic formula
- 9. Let m = 4x ^ 2-12x + 9y ^ 2 + 30y + 35, then a.m > 0, B.M ≥ 0, C.M < 0, D.M ≤ 0
- 10. Are two triangles of equal area and perimeter congruent?
- 11. The diameter of the bottom of a cylindrical pool is 8 decimeters, and the depth of the pool is 2 meters. If cement is applied on the bottom and around, how many square meters is the area of cement? Step by step!
- 12. A cylindrical pool is 2m deep and the perimeter of the bottom is 6.28m. A layer of cement is required to be plastered around and on the bottom of the pool. How many square meters is the area of plastering cement
- 13. A cone-shaped sand pile has a bottom circumference of 12.56m and a weight of 1.5 tons per cubic meter of sand. How many tons of sand is this pile? fast
- 14. A conical sand pile with a bottom area of 12.56 and a height of 0.9 meters. How thick can this pile of sand be laid into a sand pit with a length of 4.5 meters and a width of 2 meters?
- 15. The perimeter of the bottom surface of a cone-shaped sand pile is 25.12m and the height is 1.5m. If the weight of each cubic meter of sand is 1.7t, how much is the weight of the pile? (the number is reserved to one decimal place)
- 16. A wheat bin is a cone on the top and a cylinder on the bottom. The diameter of the bottom of the cylinder is 3 m and the height of the cone is 0.6 M. if the weight of each cubic meter of wheat is 735 kg, the volume can be calculated, How many kilos does the wheat weigh? The number obtained keeps the whole number
- 17. There is a cone on the top and a cylinder below. The circumference of the bottom of the cylinder is 9.42 meters and 2 meters high. The height of the cone is 0.6 meters. If 600 kg per cubic meter, it's not enough How many tons can this store hold
- 18. A cuboid swimming pool is 20 meters long, 18 meters wide and 2.5 meters deep. If the walls and bottom are plastered with cement, how many square meters is the area plastered with cement You have to be right
- 19. Hope primary school to build a swimming pool, 50 meters long, 3 meters wide, 2 meters deep. 1 at the bottom of the swimming pool and the inner wall of a layer of cement daub cement area 2. Draw a water line with white paint 1.5 meters high along the inner wall of the swimming pool. How long is the water line 3. How many cubic meters of water are stored in the swimming pool according to the water level Hope primary school to build a swimming pool, 50 meters long, 35 meters wide, 2 meters deep. 1 at the bottom of the swimming pool and the inner wall of a layer of cement daub cement area
- 20. A granary full of rice is 0.9m high, with a cone on the top and a cylinder on the bottom. The perimeter of the bottom is 12.56m, and the height of the cylinder is 0.5m 1. How much rice can this granary hold? 2. If the weight of rice is 500kg per cubic meter, how many tons of rice can this granary hold?