If the cone is cut into two parts with equal side area by a plane parallel to the bottom, and the volume of the small cone is 1, then the volume of the original cone is ()

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• 1. If a plane parallel to the ground of the cone divides the cone into two equal segments, then the ratio of the side area of the two parts is I did a good job Can you do me a favor
• 2. A plane parallel to the bottom of a cone cuts the cone, the diameter of the cross section and the bottom is 3cm and 9cm respectively, and the distance between the cross section and the bottom is 4cm Find the area of this cone's axis section
• 3. What figure can be obtained by cutting a cone with a plane parallel to the contour line of the cone? Is it a parabola?
• 4. What are the figures obtained by cutting a cylinder, a cone or a frustum through the plane of the axis of the following body of revolution? It's urgent. Thank you
• 5. What is the figure of plane oblique section cone? It's an ellipse if you cut a cylinder obliquely. I know, Ask 2, 3 floor plane oblique section conic get figure is ellipse? Yes or no?
• 6. Cut a cylinder, a cone, a frustum, and a frustum with a plane passing through the axis of the following body of revolution
• 7. The quotient is 14 and the remainder is 6. The sum of the divisor and the divisor is 126. What are the divisor and the divisor
• 8. The general solution of the differential equation y '- 3 / xy = x to the power of 3 and e to the power of X To be specific,
• 9. Calculation: 30.26 degree=____ °____ ′____ 〃 18°15′36〃 =____ __ ° How to figure out... Please give me a clear idea
• 10. Using formula method to solve equation; 2x (X-2) = (x + 1) (x-1)
• 11. Can the cross section area of a cone cut by a plane be exactly half of the area of the bottom circle
• 12. When the plane parallel to the bottom of the cone is used to cut the cone, the ratio of the area of the cross section to the area of the bottom is 1:3. The ratio of the two sections which divide the generatrix of the cone into two sections is () A. 1：3B. 1：（3-1）C. 1：9D. 3：2
• 13. If the plane of the plane section is perpendicular to the axis of the cone, what is the intersection line?
• 14. The section plane intersects with the axis of the cone A. Circle B. Intersect two lines C. Ellipse
• 15. When the plane is cut perpendicular to the cone axis, the shape of the intersection line is (); when the plane is cut parallel to the cone axis, the shape of the intersection line is () When the plane cuts perpendicular to the cone axis, the shape of the intersection line is (); when the plane cuts parallel to the cone axis, the shape of the intersection line is (); when the plane cuts through the cone vertex, the shape of the intersection line is ()
• 16. If a cone is cut by a plane, can the cross section be a triangle? A right triangle? When the cross section is a circle
• 17. As shown in the figure, the cross-section of a plane passing through the apex of a cone is () A. B. C. D.
• 18. Use a plane to cut a cone and a sphere. What are the shapes of the cross sections?
• 19. The shape of the cross section of a plane passing through the apex of a cone may be
• 20. Use a plane to cut off a cylinder and a cone. The shape of the section is the same ()