Coterminal angle between 0 degrees and 360 degrees if coterminal angle is -450

Find the area of the regular hexagon if a side is 20 cm.

Is it greater than or less than7*3_9*2

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