A paraboloid is a 3D shape whose cross sections are parabolas. A solar cooker is in the shape of a paraboloid. It generates heat for cooking by reflecting sunlight toward a single point, the common focus of those parabolas. A cross section of the solar cooker can be modeled by the parabola shown below, opening up whose vertex is at the origin. If the focal point is 53 cm above the base of the cooker, and its depth is 13.25 cm, find its width.