Answer:
500 ft
Step-by-step explanation:
Perimeter: The total border of the outside of a given shape
Step 1: Find missing length
100 - 80 = 20 ft
Step 2: Add all together
100 + 150 + 80 + 85 + 65 + 20 = 500 ft
So we would need 500 ft of fence to border her yard completely.
