Answer:
13.1 (3sf)
Step-by-step explanation:
14 ^2 - 5^2 = 171
root 171 = 13.1 (3sf)
441ft² (i believe this is the answer, idk though, i might be wrong sorry)
Answer:

Step-by-step explanation:
I have attached the explanation above. hopefully this will help
Answer is below this comment :D