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If the height of a cylinder is 12 decimeters, the height of a cone is () DM Connect ↑ If the height of the cone is 12 decimeters, what is the height of the cylinder? Please, I'm waiting A cylinder and a cone have the same volume and the same base area. If the height of the cylinder is 12 decimeters, then the height of the cone is () DM. If the height of the cone is 12 decimeters, then the height of the cylinder?
12 times 3 I just made 12 / 3
1. The height of a cylinder and a cone is equal. The volume ratio of the cylinder and the cone is 6:1. The bottom area of the cone is 12.56cm. What is the bottom area of the cylinder?
2. The area of the bottom of a cylinder is equal to that of a cylinder. The volume ratio is 1:2. What is the ratio of the height of a cylinder to that of a cone?
V-column = s-column * h-cone = S-cone * H / 3, v-column / V-cone = 6 / 1, s-column = 2S, cone = 12.56 * 2 = 25.12 square centimeter. Similarly, the height ratio of cylinder to cone is 1 / 6
A cylinder and a cone have the same volume and the same bottom area. It is known that the height of a cylinder is 1.2 decimeters, and the height of a cone is ()
A. 3.6 decimeters B. 1.2C. Cannot calculate D. 0.4 decimeters
Because the volume of the cylinder is equal to the area of the bottom and the volume of the cone is equal to the area of the bottom and the area of the bottom and the area of the cone is equal to the area of the bottom and the area of the bottom and the area of the cone is equal to the area of the bottom and the area of the height of the cone
If we use chemical fertilizer to fertilize the paddy field, if we use 60 kg per hectare, then we still need 70 kg. If we use 50 kg per hectare, then we need 230 kg more. How many hectares are there in this paddy field? How many kg of chemical fertilizer are there in total?
Solving the equation of first degree with one variable
Suppose this rice field has x hectares
60x-70=50x+230
10x=300
x=30
60×30-70
=1800-70
=1730
This paddy field has 30 hectares and 1730 kilograms of chemical fertilizer
1. There are two paddy fields. The first one is one third of the hectare, and the second one is one fifth less than the first one. How many hectares are there in total?
2. Xiaohong went to the fruit shop to buy fruit, and bought 9 / 11 kg grapes and 3 / 4 kg bananas, How many kilos of apples did Xiaohong buy? 3. 11 / 12-3 / 8 =? 4. 11 / 12-3 / 8 =? 5. 7 / 15 + 4 / 9 =? 6. 17 / 18-5 / 6 =? 7. 3 / 8 + 7 / 10 =? 8. 7 / 10-4 / 15 =? 9, What's the percentage of qualified products in this batch of parts?
10. The road repair team completed a 48 km long highway in 15 days. How many kilometers per day on average? How many parts of the road do you show every day?
11. There are two iron bars, one is 18 meters long and the other is 24 meters long. They should be cut into small sections of the same length, and there should be no surplus. What is the maximum length of each section?
There is a box of pears. Every three pears count exactly and there is no surplus. Every four pears count exactly and there is no surplus. Every seven pears count exactly and there is no surplus. How many pears does this box have at least?
1,1 / 3 + (1 / 3-1 / 5) = 1 / 3 + 2 / 15 = 7 / 15 ha
2,9 / 11 + 3 / 4 + 1 / 2 = 2 and 3 / 44 kg
3,11/12-3/8=22/24-9/24=13/24
4,11/12-3/8=22/24-9/24=13/24
5,7/15+4/9=21/45+20/45=41/45
6,17/18-5/6=17/18-15/18=2/18=1/9
7,3 / 8 + 7 / 10 = 15 / 40 + 28 / 40 = 43 / 40 = 1 and 3 / 40
8,7/10-4/15=21/30-8/30=13/30
9,（200-20）÷200=180÷200=9/10
10,48 △ 15 = 3.2km
So it's an average of 3.2 kilometers a day? An average of 1 / 15 of this road every day
11, because the least common multiple of 18 and 24 is 6
So the maximum length of each segment is 6 meters
The least common multiple of 12,3,4,7 is 84
So there are at least 84 pears in this box
There is a triangular paddy field with an area of 20 square meters. Its height is 5 meters. How many meters is its bottom?
Determinant
20÷5×2=8
The length of three sides of a triangular paddy field is 14 meters, 48 meters and 50 meters respectively. What is the area of this paddy field?
Because the square of 14 + the square of 48 = the square of 50
So this is a right triangle
So the area is: 14 * 48 * 1 / 2 = 336
A triangular paddy field covers an area of 6 hectares. Its height is 300 meters. How long is its bottom?
Dear landlord
6 ha = 60000 M2
So bottom: 60000 × 2 △ 300 = 400
I wish you every success
A parallelogram of land, the area is 6 hectares, the height is 200 meters, the length of the bottom is () meters
1 ha = 10000 M2
Bottom edge = 60000 △ 200 = 300m
A parallelogram of land, covering an area of 6 hectares, is 200 meters high and (300) meters long at the bottom
A parallelogram of land, the area is 1 hectare, its length is 400 meters, high______ Rice
1 hectare = 10000 square meters, 10000 ／ 400 = 25 (meters). Answer: the height is 25 meters, so the answer is: 25
RELATED INFORMATIONS
- 1. A triangle and a parallelogram have the same area and the same base. The height of parallelogram is 20cm, and the height of triangle is 20cm______ cm．
- 2. The base and area of a triangle and a parallelogram are equal respectively. The height of the triangle is 5cm, and the height of the parallelogram is 5cm______ ．
- 3. The area of a triangle is 2.4 square decimeters, and the area of a parallelogram with the same base and height is () square decimeters
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- 6. A square billet with an edge length of 4 decimeters is forged into a cuboid with an area of 20 square decimeters. The height of the cuboid is______ Decimeter
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- 8. For a triangle and a parallelogram of equal height, if the bottom of the parallelogram is three times that of the triangle, then the area of the parallelogram is [] Set the bottom as 3 and the height as 2 3×2÷2=3 9×2÷2=9
- 9. The base of a parallelogram is 6dm. The height of a triangle is equal to the height of the parallelogram, and the area is also equal. The base of the triangle is () DM [urgent] Answer accepted Online 10 points
- 10. A parallelogram is made up of two identical triangles. The area of the two triangles is 12 square decimeters, and the height is 4dm and 5DM
- 11. The volume of a cone is 36 DM3, its bottom area is 18 DM2, and its height is (c) DM. A, 23 B, 2 C, 6 D, 18 D How many should I choose? Let's talk about Chen. How can I calculate
- 12. A trapezoidal glass, upper bottom 3. Lower bottom 3. Height is 17 decimeters, glass is 25 yuan per square meter, how much to buy such 10 pieces of glass How did you get here?
- 13. The area of a triangular vegetable field is 30 square meters, and its height is 5 meters. How long is the bottom of this vegetable field? 30 × 2 △ 5 = 12m
- 14. When a circle is enlarged, its area is eight times larger and its circumference is 50.24 cm larger than before. What is the original area of the circle? It's better not to use the equation. It can't be used,
- 15. There is a semicircular flower bed, its perimeter is 102.8 cm, area?
- 16. Xiaoming uses a 15.42 decimeter iron wire to form a semicircle, the radius of which is______ Decimeter, area is______ Square decimeter
- 17. What is the area of a semicircle with a circumference of 10.28 cm
- 18. It is known that the circumference of the semicircle is 51.4cm. How many centimeters is the diameter and how many square centimeters is the area of the semicircle
- 19. The perimeter of a rectangular board is 80 decimeters, and the ratio of width to length is 3:5. Saw the largest round table on the board. What is the area of the round table Decimeter?
- 20. A semicircular flowerbed is 10.28 meters in circumference. How many square meters is the area of this flowerbed?