Straight Lines and Pair of Straight Lines Part 2

A point P moves so that the sum of squares of its distances from the points (1,2) and (−2,1) is 14 . Let f(x,y)=0 be the locus of P, which intersects the x-axis at the points A,B and the y-axis at the points C,D. Then the area of the quadrilateral ACBD is equal to :