How to merge two spheres using matlab?

Lets suppose we have two spheres of same or different radii. i want to merge them. sure it will give overlap. i am trying but could not succedd so far. Can anyone guide. Thanks for all cooperation in advance.

[KSSV]

What do you mean by merge? You want to remove the intersection part?

[M.S. Khan]

yes KSSV, i want to remove the intersection part.

[KSSV]

YOu have any code for the generation of sphere? Show us the code..You may consider reading this:

https://in.mathworks.com/matlabcentral/answers/93623-how-do-i-plot-the-line-of-intersection-between-two-surfaces

[M.S. Khan]

i consider just normal spheres.

For example x^2 + y^2 +z^2 = R^2

(x-d)^2 + y^2 +z^2 = r^2

when i merge them, they overlap each other.

i want to exclude the overlapping part and then want to find its volume.