Jee Advanced
Circle
IIT-JEE 2007 Paper 2 Offline
MCQ+3 / -12007
Let \(\mathrm{ABCD}\) be a quadrilateral with area 18 , with side \(\mathrm{A B}\) parallel to the side \(\mathrm{C D}\) and \(\mathrm{A B}=2 \mathrm{CD}\). Let \(\mathrm{AD}\) be perpendicular to \(\mathrm{AB}\) and \(\mathrm{CD}\). If a circle is drawn inside the quadrilateral ABCD touching all the sides, then its radius is :