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The line that passes through the middle of a sphere or planet is called its diameter. The diameter is the longest distance across the sphere, passing through its center, and it is twice the length of the radius, which is the distance from the center to the surface.

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3w ago

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Is a sphere equivalent by distortion to a torus?

No, a sphere is not equivalent by distortion to a torus. A sphere is a simple closed surface with no holes, while a torus has a hole in the middle. In topological terms, they belong to different categories, as a sphere has a genus of 0 and a torus has a genus of 1. Therefore, they cannot be transformed into one another through continuous deformation (homeomorphism).


What is the distanceacross the middle of a circle of a sphere?

the distance across the middle is the radius and whole distance across it is the diameter


Is equatorial circumference the same as radius?

No. The circumference is the distance around a circle or equaltor wheras the radius is the distance from the centre of a sphere (the centre of the earch if you will) to the surface. the diameter is twice the distance of the radius and is the distance from the surface of a sphere, through the middle point across to the other surface.


What are all the the cross sections of a sphere?

The cross sections of a sphere can be circular or elliptical, depending on how the plane intersects the sphere. When a plane cuts through the center of the sphere, the cross section is a circle with the same radius as the sphere. If the plane intersects the sphere at an angle or does not pass through the center, the cross section will still be a circle, but its radius will be smaller than that of the sphere. Additionally, if the plane is tangent to the sphere, the cross section reduces to a single point.


What is the middle sphere?

The lower part of the mantle between the asthenosphere and the outer core.