Can anyone please help me solve the problem below?Thanks...

The vertices A and B of a quadrilateral lie on a circle and are colinear with external point P. A secant is drawn to the circle intersecting at C and D. Angle BPC is 30 deg. If seacants PA and PD have lengths of 100m and 90 m,respectively and the external segment PB is 50 m, determine the area of the quadrilateral ABCD?