RRB Group D 3-Oct-2018 Shift 1 Solved Paper

Question : 100 of 100

Marks: +1, -0

In a quadrilateral PQRS, ∠S = 90°. A circle (o,r) touches the side PQ, QR, RS, and SP at A, B, C and D, respectively, if QR = 38 cm, RS = 25 cm and QA = 27 cm, find ‘r’.