### How many fence post is needed to fence in 20 acres?

To calculate the number of posts you would need to no the shape of the 20 acres. If we assume the land is square we can calculate the length of one side of the 20 acres as follows: 1 Acres equals 43,560 square feet 20 acres equals 20 X 43,560 = 871200 square feet. We can find the length of one side by taking the square root of 871200 = 933.4 feet. Divide the length…