A rectangular piece of paper ABCD is folded so that edge CD lies along edge AD making a crease DP. It is unfolded, and then folded again so that edge AB lies along edge AD making a second crease AQ. The two creases meet at R, forming triangles PQR and ADR. If AB = 6 cm and AD = 8 cm, what is the area of quadrilateral DQRC in cm^2?
