A slide on a child's play structure is to be supported in part by strut CD (railings are omitted from the sketch for clarity). End C of the strut is to be positioned along the outside edge of the slide, halfway between ends A and B. End D of the strut is to be positioned on the y axis so that the angle ∠ACD between the slide and the strut is a right angle. Determine the distance h that point D should be positioned.
