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## anonymous 5 years ago Find the area of a regular octagon with apothem K and side of 10. 40K 60K 80K

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1. anonymous

For a regular octagon the area is given by $8 × \text {Apothem}^2 × \tan(π/8)$ Again, $\text{Side} = 2 × \text{ Apothem } × \tan(π/8)$ So use the second one to find the value of tan(π/8) and then substitute the value in the first which will give 40k as answer.

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