Point in n-dimensional sphere

Let $S$ be an n-dimensional sphere with center $(c_1,\ldots,c_n)$ and radius $r$, where \[(x_1-c_1)^2+\cdots+(x_n-c_n)^2=r^2\] and let $p_1,\ldots,p_m$ be $m$ points, this application finds the point(s) that are in the sphere or on the border of the sphere.

Point in Sphere Calculator