You buy a square lot that is 154 yd on each side. What is its size in acres?

3 answers

http://www.calculateme.com/Area/SquareYards/ToAcres.htm

Multiply 154 x 154 to get the number of square yards; then use the calculator above.
Since 1 acre = 4,840 sq. yards, you can set up a proportion with x representing the unknown acres:

1 / 4840 = x / 23,816

Cross multiply.
Sorry -- there's a typo above. The lot is 23,716 square yards.