I need to know how to find the contents of a sphone; however I have not been able to find an equation for it online. I noted that the equation for a cone is 1/3(h)(A base). So I thought that perhaps the formula for a sphone could be the volume of its base \* h \* 1/3 since a sphone is a continuous series of spheres terminating to a point similar to the continuous circles terminating to a point in a cone.



How to find the content of a sphone
The [sphone](http://hi.gher.space/wiki/Sphone) is a 4-dimensional generalization of a cone (height $h$), where the base is a sphere (radius $r$). It is one of a collection of 4-dimensional objects, see [this overview.](https://bendwavy.org/klitzing/explain/round.htm#top) The surface equation is
$$|(x\_1^2+x\_2^2+x\_3^2)^{1/2}+(r/h)x\_4|+(x\_1^2+x\_2^2+x\_3^2)^{1/2}=r,$$
the volume is $\frac{1}{3}\pi r^3 h$.


