Definition of hollow cylinders , Cone , Spherical cell , cube, cuboid sphere , Hemispheres
Answers
Definition of a cube:
An object which looks like solid box-shaped that has six identical square faces.
A cube has 6 equal and plane surfaces. All the faces of a cube are square in shape
Definition of cuboid:
The cuboid has 6 rectangular faces. The opposite rectangular plane surfaces are identical (equal in all respects). It has 8 vertices and 12 edges.
In a cuboid there are 6 rectangular plane surfaces. There are 8 vertices and 12 edges.
Definition of cylinder:
A cylinder stands on a circular plane surface having circular plane surfaces on its top and bottom. Thus a cylinder has two circular plane surfaces, one at its base and another at its top. It has a curved surface in the middle.
It has two edges, at which the two plane surfaces meet with the curved surface. These edges are curved edges.
In a cylinder there are 2 plane surfaces and 1 curved surface. There are 2 edges and no vertices.
Definition of cone:
A cone has one plane circular surface, i.e. its base and only one curved surface. In a cone there is 1 plane surface and 1 curved surface. There are 1 edge and 1 vertex.
The ball-like shape is called a sphere. In sphere there is curve surface, no edge and no vertex.
Answer:
Hollow cylinder-- A hollow cylinder is one which is empty from inside and has some difference between the internal and external radius.
Cone-- A cone is a three-dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex.
Cube-- In geometry, a cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. The cube is the only regular hexahedron and is one of the five Platonic solids. It has 6 faces, 12 edges, and 8 vertices.
Cuboid-- A cuboid is a 3D shape. Cuboids have six faces, which form a convex polyhedron. Broadly, the faces of the cuboid can be any quadrilateral. More narrowly, cuboids are made from 6 rectangles, which are placed at right angles. A cuboid that uses all square faces is a cube.
Spherical cell-- In geometry, a spherical shell is a generalization of an annulus to three dimensions. It is the region between two concentric spheres of differing radii.
Hemispheres-- In geometry it is an exact half of a sphere. It also refers to half of the Earth, such as the "Northern Hemisphere" (that part of the Earth north of the equator), or "Western Hemisphere" (the half of the Earth west of a line running from the North Pole through England to the South Pole, includes the Americas)