Find the surface area. Round to the nearest hundredth if necessary. 7 m
3 m
6 m
2 m
9 m
O 169 m2
192 m2
O 178 m2
208 m?
189 m2

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.