Answer:
75
Step-by-step explanation:
180-30=150
150/2=75
I am pretty sure this is right
Answer:
The answer is 4:15
Step-by-step explanation:
I hope I answer your question
Answer:
Therefore the friends will have to buy 511 feet of fence (rounding up) or 510 feet of fence ( to the nearest foot).
Step-by-step explanation:
i) perimeter of rectangular yard = 319 feet
ii) perimeter of yard of friends 
iii) Therefore the friends will have to buy 511 feet of fence or 510 feet of fence ( to the nearest foot).