Volume 2 : 3 ratio of the volumes of the sphere and cylinder is credited to Archimedes. The volume of a sphere is the integral of an infinite number of infinitesimally small circular disks of thickness "dx". The calculation for the volume of a sphere with center 0 and radius "r" is as follows. The surface area of the circular disk is formula_10. The radius of the circular disks, defined such that the x-axis cuts perpendicularly through them, is or where y or z can be taken to represent the radius of a disk at a particular x value. Using y
X-Treme X-Men thirteenth and final issue was released in April 2013. Volume 1 of the series originated as part of a revamp of the X-Men line of comics in 2001. Prior to this revamp, Claremont was writing both of the main X-Men titles ("Uncanny X-Men" and "X-Men", the latter of which became "New X-Men", and then ""). He was removed from both core X-titles by Editor-in-Chief Joe Quesada when his storylines fell apart due to editorial interference by the previous editor-in-chief in a failed attempt to capitalize on the first X-Men movie. Quesada offered Claremont the opportunity to write only one of