Area of Two-Dimensional Figures

Area of Two-Dimensional Figures

1Area of Two-Dimensional Figures

Shape	Formula
Rectangle	𝐴 = 𝑙𝑤, where 𝑙 is the length and 𝑤 is the width 𝐴 = 𝑏ℎ, where 𝑏 is the base and ℎ is the height
Square	𝐴 = 𝑙𝑤, where 𝑙 is the length and 𝑤 is the width 𝐴 = 𝑏ℎ, where 𝑏 is the base and ℎ is the height 𝐴 = 𝑠2, where 𝑠 is the side length
Triangle	𝐴 = ½ 𝑏ℎ, where 𝑏 is the base and ℎ is the height
Circle	𝐴 = 𝜋𝑟2, where 𝑟 is the radius
Trapezoid	𝐴 = ½ (𝑏1 + 𝑏2)ℎ, where 𝑏1 and 𝑏2 are the bases and ℎ is the height
Parallelogram	𝐴 = 𝑏ℎ, where 𝑏 is the base and ℎ is the height
Rhombus	𝐴 = 𝑏ℎ, where 𝑏 is the base and ℎ is the height 𝐴 = ½ 𝑑1𝑑2, where 𝑑1 and 𝑑2 are the diagonals
Equilateral Triangle	𝐴 = √3/4𝑠2, where 𝑠 is the side length
Regular Polygon	𝐴 = ½ 𝑃𝑎, where 𝑃 is the perimeter and 𝑎 is the apothem

                                                                                                                                                                                                                                         

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