Utah Core Standards
UT.3.MD. MEASUREMENT AND DATA (3.MD)
Solve problems involving measurement and estimation of intervals of time, liquid volumes, and masses of objects. Represent and interpret data. Understand concepts of area and relate area to multiplication and addition. Recognize perimeter as an attribute of plane figures and distinguish between linear and area measures.
3.MD.8. Solve real-world and mathematical problems involving perimeters of polygons, including finding the perimeter given the side lengths, finding an unknown side length, and exhibiting rectangles with the same perimeter and different areas or with the same area and different perimeters.