-7x+3 (hope this is the answer you are looking for)
Answer:
21
Step-by-step explanation:
trust (used a calculator)
You know each side is 9 meters long, meaning it’s a square. To find perimeter, add up all the sides aka. 9+9+9+9=36. To find the area, multiply one side by the other aka. 9x9 = 81.