Q. In fig., a circle with centre
O is inscribed in a quadrilateral
ABCD such that, it touches the sides
BC, AB, AD and
CD at points
P, Q, R and
S respectively, If
AB=29 cm,
AD=23 cm,
∠B=90o and
DS=5 cm, then the radius of the circle (in cm) is:
- 11
- 18
- 6
- 15