Zane’s elevation relative to the edge of the inside of the volcano (in meters) as a function of time (in seconds) is graphed. How long did it take Zane to reach the edge of the volcano?

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