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Unformatted text preview: A , swept out by a wiper of length L is given by the equation A = L 2 arccos( L/2 ). Solving for A to be half the area of the porthole gives two solutions: L = 2 1/2 , 3 1/2 . A little straightforward calculus gives you a maximum of about 52.45% of the area of the porthole with a wiper of length approximately L = 1.588 ....
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 Spring '10
 AlbertoDelgado
 Combinatorics

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