This Application Problem is a part of the Lesson 13, Unit 5, Grade 5. The Colliers want to put new flooring in a -foot by -foot bathroom. The tiles they want come in 12-inch squares. What is the area of the bathroom floor? If the tiles cost $3.25 per square foot, how much will they spend on the flooring? This type of tiling applies the work from Lessons 10-12 and bridges to today's lesson on the distributive property.