Find the surface area pls I need help :(

If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other

27 is what percent of 108? 27 is % of 108

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.