Show your work and find the surface area

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.

If angle ase measures 168 degrees, find the measure of angle dse. the figure mag not be drawn to scale

Find the sixth term of the following geometric sequence.