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22-03-2017
Mathematics

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The radius of a garden in the shape of a regular pentagon is 18 feet. Find the area of the garden

The radius of a garden in the shape of a regular pentagon is 18 feet Find the area of the garden class=

Respuesta :

22-03-2017

Θ = [tex] \frac{360}{10} [/tex] = 10
a = 18cos36
b = 18sin36
Area = 10×[tex] \frac{1}{2} [/tex]×18sin36×18cos36 = 770.36

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