The neighborhood association is buying timbers to put around the edge of the playground. the length of the playground is 51 1/8 ft. the width is 38 1/4 ft. what is the perimeter of the playground? **hint - you should convert your fraction to a decimal. select one: a. 178.75 ft b. 178.25 ft c. 89.25 ft d. 89.75 ft

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.