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ad-work [718]
3 years ago
12

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

Mathematics
1 answer:
natima [27]3 years ago
8 0
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.

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