How many fence posts are needed to fence in 2 acres at 12 feet apart?

To fence in 2 acres, you first need to determine the perimeter. Since 1 acre is 43,560 square feet, 2 acres equals 87,120 square feet. Assuming a square shape for simplicity, each side would be approximately 417 feet long, giving a perimeter of about 1,668 feet. If fence posts are placed 12 feet apart, you would need about 139 posts (1,668 feet ÷ 12 feet per post).