Chords AB and CD of a circle intersect at E and are perpendicular to each other. Segments EA, EB and ED are of lengths 2 cm, 6 cm and 3 cm respectively. Then, what is the diameter of the circle ?
Hi,
The answer is $\displaystyle \sqrt{65}$. In the future if you want more information about a solution, show what you have tried. This is a help forum, not an answering service.