A dog is leashed to the corner of a house. How much running area does the dog have? Round your answer to the nearest square foot, if necessary.
A drawing of a dog leashed to the corner of the house. The dog can moves in a circular path. The radius of the circular path is labeled 20 feet. The corner of the house sits at the center of the circle so that the house blocks part of the dog's path.
The dog has about_______
square feet of running area.