Distance Traveled question

You are wanting to go from the city of Epicville to the city of Mathemagica. You are traveling by automobile and must follow the freeways. In order to get to Mathemagica, you will need to travel 300 miles north and then 400 miles east.

After determining how far you will need to travel by car, you have a friend that offers to fly you directly from Epicville to Mathemagica by airplane.

What is the difference in distance traveled by automobile and airplane? Please type in your answer in Edgenuit