Hi.....terrible at math
I'm putting a border around my pool 3 feet out all around. (16'x 48" summer escapes pro series.) I saw some large river rock at Lowes. I will be protecting liner with a lawn edging border attached to legs with zip ties. I need to know how many 0.5 cubic feet bags of the rock will I need :?: I also will be placing 25 stepping stones around it. And then decorative brick for the outside border. Thank you for any help