The Method of Mechanical Theorems convenient to use a little bit of coordinate geometry. If a sphere of radius 1 is placed with its center at "x" = 1, the vertical cross sectional radius formula_2 at any "x" between 0 and 2 is given by the following formula: The mass of this cross section, for purposes of balancing on a lever, is proportional to the area: Archimedes then considered rotating the triangular region between "y" = 0 and "y" = "x" and "x" = "2" on the "x"-"y" plane around the "x"-axis, to form a cone. The cross section of this cone is a circle
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