AMC 10 Step by Step
2021 AMC 10AProblem 21P21-25~6 minPrint

Let ABCDEFABCDEF be an equiangular hexagon. The lines AB,CD,AB, CD, and EFEF determine a triangle with area 1923192\sqrt{3} , and the lines BC,DE,BC, DE, and FAFA determine a triangle with area 3243324\sqrt{3} . The perimeter of hexagon ABCDEFABCDEF can be expressed as m+npm +n\sqrt{p} , where m,n,m, n, and pp are positive integers and pp is not divisible by the square of any prime. What is m+n+pm + n + p ?

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Problem © Mathematical Association of America (MAA), American Mathematics Competitions. Reproduced for non-commercial educational use. Solution and commentary are original to this site.