Answer:
because the area expression can be rewritten as
which equals 
Step-by-step explanation:
Area of the rectangle 

Since the length of a rectangle is 20 units more than its width.

The correct option is therefore 1.
8 x 8 = 64
10 x 6 + 4 = 64
32 x 2 = 64
12 x 5 + 4 = 64
13 x 4 + 12 = 64
False, the sides on the left and right are the same length the bottom is not