Hi Talougo - for something like that you might try creating both a box and a sphere around the same point, like this:
Then select one object, and run the Construct > Boolean > Intersect command, then select the other object and right-click or push "Done" to finish the command.
The Boolean Intersection command will generate a result that has the common volume between the 2 shapes, which will look like this:
- Michael
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