## The Sphere

The following elements of a sphere are calculated if one of the first five is given.
Additionally calculated are the radius and the perimeter of a parallel circle with a given
central angle.

- Radius r
- Diameter d
- Perimeter u
- Volume V
- Surface S

### Example:

Given:
¯¯¯¯¯¯
Surface S = 1
Results:
¯¯¯¯¯¯¯
Radius r = 0,28209479
Diameter d = 0,56418958
Perimeter p = 1,7724539
Volume V = 0,094031597
Parallel circle : 48°
Radius r' = 0,18875826
Perimeter u' = 1,1860031

### See also:

Wikipedia: Sphere