which of the following is not a solid of revolution?
1) sphere
2) cube
3)cone
4)cylinder
Answers
Answer:
cylinder is a t solid of revolution .
Answer:
CUBE
Explanation:
Such solids are called solids of revolution. Thus if the curve was a circle, we would obtain the surface of a sphere. If the curve was a straight line through the origin, we would obtain the surface of a cone. ... Now if we take a cross-section of the solid, parallel to the y-axis, this cross-section will be a circle.
The pyramid and cube do not have circular cross sections, so these are not solids of revolution. 2. ... When the region under a single graph is rotated about the x-axis, the cross sections of the solid perpendicular to the x-axis are circular disks.
A cone is solid of revolution generated by rotation of a right triangle around one of its legs as the axis of revolution.
A cylinder is solid of revolution generated by rotation of rectangular around one of its sides as the axis of revolution.