What is the area of the square with the following coordinates: (x, y), (20, 20), (20, 9), (x, 9)?
Select the correct option:
A) 121  B) 132  C) 144  D) 156  E) 169

Rationale: to find the area of a square , knowing the length of one side is sufficient . from the coordinates given , we can see that one side equals 11 . the area is 11 * 11 = 121 . the answer is a .
Answer: A