If a rectangle have length 16 cm and diagonal 20cm.calculate its area. Choose one:
A) 185  B) 132  C) 165  D) 192  E) 212

Rationale: breadth = √ 20 ^ 2 - 16 ^ 2 = √ 144 = 12 cm area = 16 * 12 = 192 sq . cm answer d
Answer: D