what is the area of the rectangle in terms of x based on the figure on the right?

What is the area of the rectangle in terms of x based on the figure on the right?
Area of rectangle = length x width
= (3x+2)(3x-1)
= 9x²+3x+6x-2
= 9x²+3x-2
Hence, the answer is 9x²+3x-2