OciMarneymaude OciMarneymaude
  • 18-12-2016
  • Mathematics
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Area of a regular decagon with a side length of 20 an a apothem of 10

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pingwin09
pingwin09 pingwin09
  • 18-12-2016
The area of a regular polygon with given side length and apothem is:
A = ½nsr
where
n = number of sides
s = side length
r = apothem
Since decagon has n = 10, hence
A = ½(10)(20)(10) = 1000 square units (ANSWER)
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