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Basic Geometry

Basic Geometry

Area Formulas Examples

Example 1

area = b x h







Example 2







Example 3

area of trapezoid  = 1/2(b1 +b2) x h







Example 4

area = pi * r ^ 2









Example 5

area = 1/2 x a x p

a = apothem

P =  perimeter

This is a regular hexagon with sides of 3.4 cm and an apothem of 2.9 cm.





This is a regular quadrilateral, or square, with sides of 4.4 cm and an apothem of 2.2 cm.







You can compare this to multiplying base times height: