Christine used 12 cubes to make this 3-step staircase. if she uses a total of 56 cubes to make a similiar staircase, how many steps will the staircase have?

In the diagram, points d and e are marked by drawing arcs of equal size centered at b such that the arcs intersect ba and bc. then, intersecting arcs of equal size are drawn centered at points d and e. point p is located at the intersection of these arcs. based on this construction, m , and m