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 (The X-Files) importance of X's loss" in the episode. Handlen has also called X "the best of Mulder's informants", explaining that this is "because he's always pissed off, he's always reluctant to provide information, and you can't ever be sure what play he's really running". Series writer Frank Spotnitz has called X "the meanest, nastiest, most lethal killer on the planet". Steven Williams has noted that he feels the episodes "Nisei" and "731" were chiefly responsible for the character's popularity with fans. In 1997, Williams was nominated for a Screen Actors Guild Award for Outstanding Performance by an Ensemble in a Drama