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Perimeter:[br]Distance around outside of a 2 dimensional shape.[br]Measured in regular units like, feet, inches, centimeters.[br]Add the length of all sides.[br]Examples include picture frames, amount of fence for a yard.
Area:[br]Space enclosed by a 2 dimensional shape.[br]Measured in square units, like ft^2, in^2, or cm^2.[br]Each shape has a formula based on multiplication.[br]Examples include calculating paint for a wall, amount of fabric for a blanket.
