Each side of the tree house is the same length. Peter plans on putting a pentagonal roof on the tree house. The sides of the roof will be 6 inches longer than the sides of the tree house. A large pentagon is labeled n 6. A smaller pentagon inside of the large one is labeled n. A solid circle is in the middle of the small pentagon. Which expression represents the perimeter of the roof, in inches? 35n n 30 5n 6 5n 30.