Circle

2x−3y+1=0 and 4x−5y−1=0 are the equations of two diameters of the circle S≡x2+y2+2gx+2fy−11=0. Q and R are the points of contact of the tangents drawn from the point P(−2,−2) to this circle. If C is the centre of the circle S=0, then the area (in square units) of the quadrilateral PQCR is