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a surface. Think of an area rug. Areas are measured in square feet, square inches, square meters, etc. AREA Formula CIRCUMFERENCE (Perimeter) Formula Circle A = r. C = d or C = 2r POLYGON AREA Formula 1 AREA Formula 2 Square A = s. A = ½ d Rhombus A = bh. A = ½ dd Parallelogram A = bh. Rectangle A = lw or . A = bh. Triangle A = ½ bh. Trapezoid ................
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