This Application Problem is a part of the Lesson 5, Unit 2, Grade 5. Aneisha is setting up a play space for her new puppy. She will be building a rectangular fence around part of her yard that measures 29 feet by 12 feet. How many square feet of play space will her new puppy have? If you have time, solve in more than one way. This problem is a bridge from Lesson 4's unit form mental math strategy.