Wally is rebuilding his fence. each section of the fence will have 12 vertical boards that are each eight inches wide. he’s going to attach them to two horizontal pieces of wood and add a diagonal piece to brace the fence section. the horizontal pieces will be five feet apart. about how long should the diagonal piece of wood be? if wally plans on using 30 sections of fence, about how many feet of wood will he need for the horizontal and diagonal pieces?