Relation between Energy and Time Period of a Rotating a Black Hole

This article is about the relation between time period and mass or energy of a rotating black hole (surface area reduces very slowly) with the help of concept of hawking radiation. Rotating black hole evaporates energy and its size decreases as the radiation takes place. In this article I shall show that the ratio of energy or mass and time period of a rotating black hole remains constant. W = E/T Where W is wasifs constant.