One rectangle has a surface of 64 cm2 and one side has 4 times the size of the other. The perimeter of the rectangle is: a) 20cm
b) 40cm
c) 64cm
d) 32cm​

What is the area of the trapezoid shown ?

25 ! i need asap! ! ill mark brainliest!

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.