I need help pleases thank you.​

Which of the following three dimensional figures has a circle as it’s base

What is the length and width of a 84.5 square foot rug? will mark

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.