Maria typically rides her bike from her house to the park using the 17 miles canyon trail rd. She knows that the distance from her house to the corner of maple ave. And silver st is 8 miles. Maria is getting tired of getting bit by mosquitos as she rides past the the pond near the canyon trail. She is contemplating riding down maple ave and then up silver st to get to the park i but she wants to know how many miles extra this route would be. How many additional miles is this new route compared to her typical route?