Interactive Spherical Properties Calculator

Enter any one of the four spherical variables (R, C, A or V) and this program will compute the other three unknown variables.  The units can be anything, such as meters, inches, miles, feet, etc., whatever you decide the units to be.

 R = Radius units
 C = Circumference units
 A = Surface Area square units
 V = Volume cubic units
   

    Enter only one known variable and leave the others blank.
    The unknown variables will be computed and displayed here.


The program first takes whatever single variable the user provides and computes the radius (R) of the sphere from it.  From this radius, it then computes the other variables.

The simple relationships between the radius and the other variables are: 

 Given C:
       R = C / 2 / pi


 Given A:
       R = SqRoot(A / 4 / pi)


 Given V:
       R = CuRoot(3 * V / 4 / pi)


 Given R:
       C = 2 * pi * R
       A = 4 * pi * R * R
       V = 4 * pi * R * R * R / 3

 Where:
       pi = 3.1415926535897932

Jay Tanner - PHP Science Labs - 2011