I don't know why this irked me so much, but it did: > the roughly 50-square-mile area surrounding the San Francisco Peninsula SF itself is around 50 square mi

I don't know why this irked me so much, but it did: > the roughly 50-square-mile area surrounding the San Francisco Peninsula SF itself is around 50 square miles. I know the article probably means something like "the area within 50 miles of San Francisco," but an editor should have caught this.