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
The Return of a Man Called Horse original "A Man Called Horse". Ebert commented that "What gets me is that initiation rite, which is repeated in this film in such grim and bloody detail you'd think people didn't have enough of it the last time. First Morgan has his pectoral muscles pierced with knife blades. Then eagle's talons are drawn through the wounds and tied to leather thongs. Then he hangs by the thongs until sufficiently purified. You'd think one ceremony like that would do the trick, without any booster shots." "The Return of a Man Called Horse" was released to DVD by MGM Home Video on