How do you define the size of a Sphere?

volume of sphere (V) =4/3 π r3

it can be that you specify two points to set the circumference or the radius. (then define the size)

Use the3P (Three Points) option to define the size of the sphere anywhere in3D space. The three points also define the plane of the circumference. No more, No less.

Agree with the previous answers

With Radius or Diameter Only one >>>>>>>>>>> thank you

thank you for invitation

I agree with engineer mohammmed elgohary

Sphere size is calculated using two measures: the volume (how much space the sphere takes up) and the surface area (the total area of the sphere's surface). Both sphere size and surface area can be easily calculated if you know the radius or diameter of the sphere. The formula for volume is4/3 times pi times the radius cubed,

or      4/3πr^3.

The formula for surface is4 times pi times the radius squared,

or       4πr^2.

measured by calculating the distance through and around the object

Just Give its Dia or Radius.