If a base of a rectangle is 36cm and the area is 845cm2 what is the height of the rectangle

Find the solution of system of equation y= x-4 y=4x+2

The surface area of the triangular prism is .

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.