If the perimeter of a regular octagon is 80 cm, what is the side length?
10 cm
A regular octagon has 8 equal sides. The perimeter equals 8 × side.
\(\text{Side} = \dfrac{\text{Perimeter}}{8} = \dfrac{80}{8} = 10 \text{ cm}\)
Hence, the side length is 10 cm.
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