In the diagram, PQRS is a trapezium with PQ||SR. STR is a straight line, PSHQT, PTHQR. If |PQ| = 12cm and the height of the trapezium is 9cm, find its area.
Correct Answer: Option D
A = 1/2(A + B)h = 1/2(24 + 12) x 9 = 162