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 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 Smith, Rufus Reid, Fred Hopkins and vocals by Amina Claudine Myers. The Allmusic review by Brian Olewnick states, "Henry Threadgill's first album as a leader immediately plunged into experimental waters. He utilized a nonet the likes of which had certainly never been heard before and probably not since... Threadgill's massive talent for mid-size band arrangements is immediately apparent...