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0.3 Geometric formulas

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2 dimensions
Name Shape Formulas
Rectangle No Alt Text Perimeter: P = 2 l + 2 w Area: A = l w
Square No Alt Text Perimeter: P = 4 s Area: A = s 2
Triangle No Alt Text Perimeter: P = a + b + c Area: A = 1 2 b h Sum of Angles: A + B + C = 180°
Right Triangle No Alt Text Pythagorean Theorem: a 2 + b 2 = c 2 Area: A = 1 2 a b
Circle No Alt Text C = 2 π r Circumference: or C = π d Area: A = π r 2
Parellelogram No Alt Text Perimeter: P = 2 a + 2 b Area: A = b h
Trapezoid No Alt Text Perimeter: P = a + b + c + B Area: A = 1 2 ( B + b ) h
3 dimensions
Name Shape Formulas
Rectangular Solid No Alt Text Volume: V = l w h Surface Area: S A = 2 l w + 2 w h + 2 h l
Cube No Alt Text Volume: V = s 3 Surface Area: S A = 6 s 2
Cone No Alt Text Volume: V = 1 3 π r 2 h Surface Area: S A = π r 2 + π r h 2 + r 2
Sphere No Alt Text Volume: V = 4 3 π r 3 Surface Area: S A = 4 π r 2
Right Circular Cylinder No Alt Text Volume: V = π r 2 h Surface Area: S A = 2 π r 2 + 2 π r h
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Source:  OpenStax, Prealgebra. OpenStax CNX. Jul 15, 2016 Download for free at http://legacy.cnx.org/content/col11756/1.9
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