deshaunh deshaunh
  • 24-03-2017
  • Mathematics
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what is the area of a regular pentagon with 7 inch sides and an apothem of 3.9 inches?

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irspow
irspow irspow
  • 28-03-2017
a(n)=(ns^2)/(4tan(180/n)) in this case:

a=(5*49)/(4tan36)

a=84.3in^2
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