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-75 Volume 1 As of 2002, X-75, Vol. 1 was unreleased on disc and, even more disappointingly, there was never a "Vol. 2." But Threadgill fans looking for a link between Air and his Sextett owe it to themselves to search this one out". "All compositions by Henry Threadgill" Recorded at CI Recording Studios, New York City on January 13, 1979 X-75 Volume 1 X-75 Volume 1 is the debut album by Henry Threadgill released on the Arista Novus label in 1979. The album and features four of Threadgill's compositions performed by Threadgill with Douglas Ewart, Joseph Jarman, Wallace McMillan, Leonard Jones, Brian