Answer:
Definatley A
Step-by-step explanation:
Answer:

Step-by-step explanation:
If you want find the perimeter, then you must add all lengths of sides of the given polygon.

Other method.
Convert the mixed numbers to the decimal:

Answer:
78.5
Step-by-step explanation:
A=πr2=π·52≈78.53982 Rounded to the tenth is 78.5