Measuring: Formulas

The proposed road for the Noble family is too expensive to build. When Leona argues that the high price doesn't make sense, she is told that a road has three dimensions. It would take 23 dump trucks to cart off the dirt before any gravel could be laid down. None of that would prevent Roy Singleton from taking over the farm property that he thinks is his. Still, Mr. and Mrs. Noble want to see the original deed. They telephone Leona with what appears to be bad news: It's true that the boundary line was five chains south of ""the northernmost granite rock."" Given that information, Leona sets out to calculate the area of the farm. But there's something that doesn't add up–unless Roy Singleton measured from the wrong rock. Sure enough, Leona and her brother Paul scout around and, in the presence of Roy Singleton, find the northernmost granite rock.