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Using units of measurement
ACMMG108 – Choose appropriate units of measurement for length, area, volume, capacity and mass
Samples: Converting between kilometres and metres. Converting between litres and millilitres.
ACMMG109 – Calculate the perimeter and area of rectangles using familiar metric units
Samples: Perimeter and Area. Area. Area and money. Calculating area using a grid.
7.GM.3 – Use side or edge lengths to find the perimeters and areas of rectangles and parallelograms and the volumes of cuboids, given whole-number dimensions
Samples: Perimeter and Area. Calculating area using a grid. Calculating the Area of Irregular Shapes. Area.
You can go to an overview of all the curricula here.
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.
Samples: Calculating Perimeter Regular Shapes. Calculating perimeter - irregular shapes. Perimeter and Area.