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Geometry 13 Online
OpenStudy (anonymous):

find the area of the regular polygon with the given apothem a and side length s Pentagon A=12.5 cm S=18.12cm

563blackghost (563blackghost):

Area of a pentagon = 5/2 sa

563blackghost (563blackghost):

So input the numbers: 5/2 18.12(12.5)

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