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The area of eachtriangleis.The entirearea is.
Areaof a regularpolygonwith apothem :We can use trigonometricfunctionsto producea differentversionof the area formula.
(rememberthat )(rememberthat and )Areaof a regularpolygonwith sidesand radius :One moreversionof the area formulaapplieswhenthe polygonis inscribedin a unit circle.
(rememberthat )
Areaof a regularpolygonwith sidesinscribedin a unit circle:
Example 2
A squareis inscribedin a unit circle.Whatis the area of the square?Use with.The squareis a rhombuswith diagonals unitslong.Use the area formulafor a rhombus.