The correct answer is (C):Area of the parallelogram ABCD = (base)(height) = (CD)(AP) = 72 sq.cm. (CD)(AP) = 72 9(AP) = 72 ⇒ AP = 8DP = √AD2-AP2 = √162-82 = 8√3Area of triangle APD = 1/2 (AP)(PD) = 32√3