Florida Common Core Standards
FL.MACC.4.MD. Measurement and Data
MACC.4.MD.1. Solve problems involving measurement and conversion of measurements from a larger unit to a smaller unit.
MACC.4.MD.1.3. Apply the area and perimeter formulas for rectangles in real world and mathematical problems. For example, find the width of a rectangular room given the area of the flooring and the length, by viewing the area formula as a multiplication equation with an unknown factor.