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7 October, 12:47

Find the perimeter of a regular nonagon with a side length of 21?

126

147

168

189

+2
Answers (1)
  1. 7 October, 12:51
    0
    A nonagon has 9 equal sides, so if the length of one of them is 21, then all of them must be too. The perimeter is 189
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