Circumsphere Radius of Cube is the radius of the sphere that contains the Cube in such a way that all the vertices of the Cube are touching the sphere. And is denoted by rc. Circumsphere Radius of Cube is usually measured using the Meter for Length. Note that the value of Circumsphere Radius of Cube is always positive. Typically, the value of Circumsphere Radius of Cube is greater than 0.