area - the measure of the number of unit squares needed to cover a surface, unit square - a square with side length 1 unit, used to measure, length - the measurement of the distance between two points, rectangle - a quadrilateral with two pairs of parallel sides, two pairs of sides or equal length and four right angles, inverse operation - opposite operations, square unit - a unit to measure area such as a square foot, square meter and so on, centimeter (cm) - a metric unit used to measure length or distance,

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