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The volume of a cone is fixed, and its bottom area and height are in direct proportion? And explain the reason Because
Because 1 / 3 * bottom area * height = volume of cone (certain)
So: bottom area * height = 3 * volume of cone (certain)
So the bottom area is inversely proportional to the height
Not in proportion
When the height is one, the volume of a cone is in direct proportion to its bottom area
Yes
When the volume, bottom area and height of a cone are fixed, the other two quantities are in direct proportion, and when they are fixed, the other two quantities are in inverse proportion?
Special note: pay attention to the cone,
The volume, bottom area and height of the cone,
When the bottom area (or height) is fixed, the other two quantities are in direct proportion,
When the volume is constant, the other two quantities are inversely proportional
RELATED INFORMATIONS
- 1. The base area of the cone is fixed, and the volume and height of the cone are in direct proportion______ (judge right or wrong)
- 2. If the volume of a cone is constant, is the area of its bottom proportional to its height? What is the proportion?
- 3. The volume of the cone is 36 cm, the bottom area is 18 cm, and the height is?
- 4. If the volume of a cone is constant, the area of its bottom is inversely proportional to its height______ ．
- 5. If the volume of a cone is constant, the area of its bottom is inversely proportional to its height______ ．
- 6. The volume of a cone is certain. The area of the bottom of a cone is not proportional to its height. Why? The length of the road is fixed every day. The length of the road is not proportional to the number of days. Why? Come back!
- 7. Tell the parallelogram area how to find the bottom and height
- 8. In order to keep the area of the parallelogram unchanged and increase the height to 4 times of the original, the bottom should be ()
- 9. Parallelogram has a certain area, its bottom and height______ (whether in inverse proportion) reason:______ ．
- 10. The base and height of the parallelogram increase by 1 / 3, and the area of the parallelogram increases by several parts
- 11. The volume and the bottom area of the cone () fill in the brackets with positive proportion or negative proportion or not. If it is proportion, please clarify the relationship between the two quantities
- 12. Judge whether the two quantities in the following questions are in inverse proportion, and explain the reason: the triangle has a certain area, its bottom and height
- 13. The bottom of a triangle is 10 cm. Is its area proportional to its height? Why?
- 14. The height and bottom of two triangles are equal, and their areas must be equal What if the height and the bottom are not in the same group? By the way, it's for primary school students. Is it complicated for me???
- 15. If the area ratio of two similar triangles is 1:4, then the similarity ratio of the two triangles is 1:4
- 16. The height of a triangle is 4 times larger than that of a triangle
- 17. What's the area of the triangle when its bottom is enlarged three times and its height remains unchanged
- 18. If the base of a triangle increases by 10% and the height decreases by 10%, then the area of the triangle is () 10% of the area of the original triangle Please list the formula, not the solution X
- 19. The base of the triangle is increased by 10% and the height is shortened by 10%. What percentage of the area of the triangle is now?
- 20. The base and height of a triangle are increased by 1 / 3. Now the area of the triangle is equal to the area of the original triangle Please explain why,