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((200/17)^2/25^2)0.005 + ((200/17)^2/40^2)0.005 + ((200/17)^2/50^2)0.005
((200/17)^2/25^2)0.005 + ((200/17)^2/40^2)0.005 + ((200/17)^2/50^2)0.005
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