"Exercises" HP Prime Book

[woops]

RoadRunner,

Many thanks for your help on this.

Each time i move the slider, the graphic is updated and the point, distance and area change, GOOD! After each slider move, I press ENTER. After many ENTER's i check the list and there is only 1 element in each list. What am i doing wrong? You are talking about the big white "Enter" key on the middle right of the calculator, right?

BTW, SUPER solution to this issue, if i can just get the list to update.