What is the area of a regular pentagon with a side length of 9 millimeters and an apothem length of 6.2 millimeters

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11-04-2018
Mathematics

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What is the area of a regular pentagon with a side length of 9 millimeters and an apothem length of 6.2 millimeters

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jdoe0001 jdoe0001 · Answer 1 · 2018-04-11T00:34:43+02:00

jdoe0001 jdoe0001

11-04-2018

PENTA=5, so the pentagon is a 5-sided polygon.

on side's length is 9, so all sides added, namely the perimeter is 9+9+9+9+9, or 45. We know the apothem is 6.2.

[tex]\bf \textit{area of a regular polygon}\\\\ A=\cfrac{1}{2}(apothem)(perimeter)[/tex]

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