Question 728726
Find the area of a regular 20-gon with sides of length 26. (Round to 2 decimal places)
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{{{Area = ns^2*cot(180/n)/4}}} n = # of sides, s = side length
{{{Area = 20*26^2*cot(9)/4}}}
= 3380*cot(9) sq units
=~ 21340.48 sq units