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.
21,080,075 questions answered
Popular Conversations
What is the middle term of the product of (x - 4)(x - 3)? User: ...
Weegy: b.(p + 2)(p + 16) to check: p*p + (2p + 16p) + (2 * 16) = p^2 + 18p + 32 so the answer is b.(p + 2)(p + 16) ...
5/26/2015 1:22:27 PM| 3 Answers
Give the next two numbers in this pattern: 0, 0.75, 1.5, 2.25, ... ...
Weegy: 0.6/0.75 = 0.8 User: Find the direct variation equation which passes through (0, 0) and (4, 1). A. y = 4x ...
5/26/2015 12:36:07 AM| 2 Answers
Evaluate f-2g for f = 4 and g = 32. 2 8 User: Write 6,000,370 in ...
Weegy: y*9 User: (b2)3 Weegy: the bond order of b2 is 1, one bond order = 1/2 (#e- in bonding MO's - #e- in ...
5/26/2015 10:14:55 AM| 2 Answers
What is the solution set of the given equation? 4y - 6y + 9y = -2
Weegy: 4y - 6y + 9y = -2 -2y + 9y = -2 7y = -2 y = -2/7 User: Solve for x. 5x - 6 = 4x + 8 Weegy: ...
5/26/2015 12:20:50 PM| 2 Answers
A major characteristic of monopolistic competition is that prices ...
Weegy: A. higher than in perfect competition. User: A minimum price, set by the government, that must be paid for a ...
5/26/2015 12:56:40 PM| 2 Answers
(2x – 1)(x + 7) = 0
Weegy: (2x + 1)(x + 7) = 0; 2x + 1 = 0; 2x = -1; x = -1/2; x + 7 = 0; x = -7; x = -1/2 or x = -7 User: x^2 ...
5/26/2015 4:37:35 PM| 2 Answers
Weegy Stuff
S
Points 709 [Total 717]| Ratings 1| Comments 699| Invitations 0|Offline
S
L
Points 706 [Total 1236]| Ratings 2| Comments 686| Invitations 0|Offline
S
1
Points 543 [Total 935]| Ratings 2| Comments 523| Invitations 0|Offline
S
L
P
Points 408 [Total 2885]| Ratings 1| Comments 398| Invitations 0|Offline
S
P
C
L
P
L
1
P
P
1
P
1
Points 248 [Total 8994]| Ratings 0| Comments 248| Invitations 0|Offline
S
Points 142 [Total 162]| Ratings 0| Comments 142| Invitations 0|Online
S
1
L
L
Points 82 [Total 8265]| Ratings 0| Comments 82| Invitations 0|Offline
S
L
Points 56 [Total 3810]| Ratings 2| Comments 36| Invitations 0|Offline
S
L
1
R
Points 48 [Total 1335]| Ratings 0| Comments 48| Invitations 0|Offline
S
Points 20 [Total 20]| Ratings 2| Comments 0| Invitations 0|Online
Home | Contact | Blog | About | Terms | Privacy | Social | ©2015 Purple Inc.