What is the apothem of polygon $JKLMN$ ? A circle with pentagon J K L M N inside it. Each vertex of the pentagon lies on the circle. Point P lies inside pentagon. Line segments P N, P K, P M are drawn. Segment P Q is perpendicular to segment M N at point Q. Lengths of segments N J, P Q, P M are labeled 5.88, 4.05, and 5.