Circle a triangle whose base has the length of the circle's circumference and whose height equals the circle's radius, which comes to multiplied by the radius squared: Equivalently, denoting diameter by "d", that is, approximately 79% of the circumscribing square (whose side is of length "d"). The circle is the plane curve enclosing the maximum area for a given arc length. This relates the circle to a problem in the calculus of variations, namely the isoperimetric inequality. Equation of a circle<br> In an "x"–"y" Cartesian coordinate system, the circle with centre coordinates ("a", "b") and radius "r" is the set of
Straight Line Stitch Straight Line Stitch Straight Line Stitch is an American metalcore band from Knoxville, Tennessee. Straight Line Stitch initially formed around 2000 and issued an EP and a demo album before adding female vocalist Alexis Brown from Clarksville, Tennessee to the band in 2003. Brown sang on their self-released 2006 effort "To Be Godlike" and then on an EP entitled "The Word Made Flesh" for which they filmed a video for the single "Remission". The video's director, Dale Resteghini, owned the production company Raging Nation Films; in 2007 he formed a subsidiary label of Koch Records called Raging Nation Records, and