Question 1013890
A mirror in the shape of a regular octagon is mounted on a wall. If the area of the mirror is 18 sq. meter find:
a. The length of the side of the mirror.
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For any regular polygon with n sides of length s:
{{{Area = ns^2*cot(180/n)/4}}}
Solve for s.
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b. If the sides of the mirror are adorned by a red ribbon glued to its sides what is the length of the required ribbon?
Perimeter = 8s