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Riki cuts two decagons out of cardboard.Then he glues yarn around theedges. How much yard does riki use if each edge of the decagon is 8 centimeter?

Respuesta :

Answer:

0.00736 Sq. Yard size of decagon is used

Step-by-step explanation:

Given

Each side of Decagon [tex]= 8[/tex] centimeter

Area of Decagon

[tex]A = \frac{5}{2} a \sqrt{5+2\sqrt{5} }[/tex]

Here a is the side of decagon

Substituting the given values, we get -

[tex]A = 2.5 * 8 * 3.077\\A = 61.54[/tex]Square centimeter

1 square centimeter = 0.000119599 square yard

Area in yard = 0.00736 Sq. Yard

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