A square is inscribed in a quarter circle in such a way that two of its adjacent vertices on the radius are equidistant from the centre and other two vertices lie on the circumference. If the side of square is √(5/2) cm, then what is the radius (in cm) of the circle?
In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase. Barking up the wrong tree