Sphere Circumference, Surface Area and VolumeThis simple program computes the basic parametersof a sphere given its radius (R) in any linear units.
The circumference of a sphere is: The surface area of a sphere is: The volume of a sphere is: A Few Basic Definitions Applied Given: = pi = The ratio of the circumference of a circle to its diameter = Circumference / Diameter = 3.14159265358979324 ... Regardless of the size (scale) of the circle, the ratio () remains constant. 1 radian = That angle at which the length of the corresponding arc of a circle is equal to its radius. The relationship between degrees and radians is: Radians / Degrees = / 180 So, 1 radian = 180/ = 57.2957795130823° = 206264.806247096" © 2014  Jay Tanner  PHP Science Labs  v1.5
