What is the volume of this composite solid? 6 m
5 m
12 m
9 m
A. 567 cubic meters
B. 1188 cubic meters
C. 864 cubic meters
OD. 132 cubic meters

Measure of angles 31 (x+4) (3x+9) me

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.

Let event a = you roll an even number on the first cube. let event b = you roll a 6 on the second cube. are the events independent or dependent? why?