a)
The dark rectangle : 6x (square units)
The light rectangle : 5 x 6 = 30 (square units)
b) 2 ways to show the area of the entire figure :
6x + 30 square units (sum of 2 area)
6 x (x+5) (length x width, where the width is 6, and length is x + 5)
Hope it helps :)
