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OpenStudy (anonymous):
A regular pentagon has a perimeter of 25 m and an area of 43.75 m^2. find the perimeter of a similar pentagon with an area of 175m^2
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OpenStudy (anonymous):
hmm I think the answer is 50m. Area ratio => 43.75:175 = 1:4 Theory of similar polygon: The area ratio is the squares of the side ratio so, side length ratio => sqrt(1): sqrt(4) = 1:2 the side length of the similar pentagon is 2x5=10 so it's permeter is 50m
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