You have new items in your feed. Click to view.
Question and answer
what is cube, cuboid, cylinder and sphere
This question has not been answered. Can you answer it? Please add your answer below ...
Question
Asked 4/13/2010 8:54:08 AM
Updated 4/13/2010 1:05:47 PM
1 Answer/Comment
Get an answer
New answers
Rating

There are no new answers.

Comments
Cube as a Geometric Solid. A regular hexahedron, the cube is a six-sided geometric solid, also called a block. It is one of the ideal solids, which include the only five solids with congruent, polyhedral angles and faces that are congruent, regular polygons. The others are the regular tetrahedron, regular octahedron, regular dodecahedron, and regular icosahedron, having 4, 8, 12, and 20 sides respectively. The cube is the only one of these five to have four edges per face: the tetrahedron, octahedron, and icosahedron – formed with equilateral triangle faces - have three; and the dodecahedron - formed with regular pentagon faces - has five.

In geometry, a cuboid is a solid figure bounded by six faces, forming a convex polyhedron. There are two competing incompatible definitions of a cuboid in the mathematical literature. In the more general definition of a cuboid, the only additional requirement is that these six faces each be a quadrilateral, and that the undirected graph formed by the vertices and edges of the polyhedron should be isomorphic to the graph of a cube.[1] Alternatively, the word “cuboid” is sometimes used to refer to a shape of this type in which each of the faces is a rectangle, and in which each pair of adjacent faces meets in a right angle; this more restrictive type of cuboid is also known as a right cuboid, rectangular box, rectangular hexahedron, right rectangular prism, or rectangular parallelepiped.[2]

A cylinder is one of the most basic curvilinear geometric shapes, the surface formed by the points at a fixed distance from a given straight line, the axis of the cylinder. The solid enclosed by this surface and by two planes perpendicular to the axis is also called a cylinder. The surface area and the volume of a cylinder have been known since deep antiquity.

In differential geometry, a cylinder is defined more broadly as any ruled surface spanned by a one-parameter family of parallel lines. A cylinder whose cross section is an ellipse, parabola, or hyperbola is called an elliptic cylinder, parabolic cylinder, or hyperbolic cylinder.

A sphere (from Greek sfa??a—sphaira, "globe, ball") is a perfectly round geometrical object in three-dimensional space, such as the shape of a round ball. Like a circle in three dimensions, a perfect sphere is completely symmetrical around its center, with all points on the surface lying the same distance r from the center point. This distance r is known as the radius of the sphere. The maximum straight distance through the sphere is known as the diameter of the sphere. It passes through the center and is thus twice the radius.

In higher mathematics, a careful distinction is made between the sphere (a two-dimensional spherical surface embedded in three-dimensional Euclidean space) and the ball (the three-dimensional shape consisting of a sphere and its interior).


Added 4/13/2010 1:05:47 PM
Add an answer or comment
Log in or sign up first.
26,594,582 questions answered
Popular Conversations
y varies directly with x and has a constant rate of change of ...
Weegy: we can model this in terms of a linear equation. y=mx+b Since the question states that y varies directly with ...
12/8/2016 11:22:54 AM| 2 Answers
Solve (x + 1 -3). User: What is the GCF of the trinomial? 3x^2 - ...
Weegy: The GCF of the trinomial 3x^2 - 15x - 42 is 3. User: , write the equations of the line passing through the ...
12/8/2016 11:16:05 AM| 2 Answers
6% of what number is 270?
Weegy: 270 * 6 = 1620 A number divided by six is 270. The number is 1620. User: Find 5% of $32.68. Weegy: 5% of ...
12/8/2016 5:50:27 PM| 2 Answers
Weegy Stuff
S
P
Points 178 [Total 450] Ratings 1 Comments 168 Invitations 0 Offline
S
P
Points 79 [Total 511] Ratings 0 Comments 79 Invitations 0 Offline
S
P
P
Points 48 [Total 727] Ratings 0 Comments 48 Invitations 0 Offline
S
Points 40 [Total 40] Ratings 0 Comments 40 Invitations 0 Offline
S
Points 16 [Total 292] Ratings 0 Comments 16 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
S
Points 8 [Total 8] Ratings 0 Comments 8 Invitations 0 Offline
S
Points 1 [Total 1] Ratings 0 Comments 1 Invitations 0 Offline
S
Points 0 [Total 0] Ratings 0 Comments 0 Invitations 0 Offline
S
Points 0 [Total 0] Ratings 0 Comments 0 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.