A sphere.
A curved surface on which all points are the same distance from the center is called a sphere.
It is called the radius. The full distance is called the diameter.
That's a sphere.
A sphere.
It is called the Diameter.
A curved surface on which all points are the same distance from the center is called a sphere.
The distance from the surface of the Earth to its center is approximately 6,371 kilometers.
Surface of a sphere
The distance from the surface of the Earth to the center is approximately 6,371 kilometers.
The distance from surface to surface through the center of a planet would be that planet's "diameter".
The distance between the surface at the center of a reflective surface and its focal point is equal to half the radius of curvature of the surface.
It is called the radius. The full distance is called the diameter.
7,000 km
That is called a sphere.
The distance from the Earth's surface to its center is approximately 3,963 miles.
A great circle is any circle on the surface of a sphere whose center is at the center of the sphere. The shortest distance between two points on the surface of a sphere is a part of the great circle that passes through them.
The distance from the center of a mirror to the focal point is called the focal length.