THE CORRECT ANSWER IS (B).SINCE 152 = 92 + 122, ∆PQR IS A RIGHT TR...

43. The correct answer is (B).Since 15

²

= 9

²

+ 12

²

, ∆PQR is a right triangle with a right angle at R. OX = OY = radius of the inscribedcircle, and since OXRY is a square the radius also equals RX or RY.Let RX = RY = r.Then PX = 9 – r = PZ and QY = 12 – r = QZ